Mukesh Dhirubhai Ambani (born 19 April 1957) is an Indian billionaire businessman. He is the chairman and managing director of Reliance Industries Ltd. (RIL), a Fortune Global 500 company and India's most valuable company by market value. According to Bloomberg Billionaires Index, Ambani's net worth is estimated at $83.4 billion , making him the richest person in Asia and the 10th richest person in the world. Early life Mukesh Dhirubhai Ambani was born on 19 April 1957 in the British Crown colony of Aden (present-day Yemen) into a Gujarati Hindu family to Dhirubhai Ambani and Kokilaben Ambani. He has a younger brother Anil Ambani and two sisters, Nina Bhadrashyam Kothari and Dipti Dattaraj Salgaonkar. Ambani lived only briefly in Yemen because his father decided to move back to India in 1958 to start a trading business that focused on spices and textiles. The latter was originally named "Vimal" but later changed to "Only Vimal". His family lived in a modest two-bedroom apartment in Bhuleshwar, Mumbai until the 1970s. The family's financial status slightly improved when they moved to India but Ambani still lived in a communal society, used public transportation, and never received an allowance. Dhirubhai later purchased a 14-floor apartment block called 'Sea Wind' in Colaba, where, until recently, Ambani and his brother lived with their families on different floors. Education Ambani attended the Hill Grange High School at Peddar Road, Mumbai, along with his brother and Anand Jain, who later became his close associate. After his secondary schooling, he studied at St. Xavier's College, Mumbai. He then received a BE degree in chemical engineering from the Institute of Chemical Technology. Ambani later enrolled for an MBA at Stanford University but withdrew in 1980 to help his father build Reliance, which at the time was still a small but fast-growing enterprise. His father felt that real-life skills were harnessed through experiences and not by sitting in a classroom, so he called his son back to India from Stanford to take command of a yarn manufacturing project in his company. Ambani has been quoted as saying that he was influenced by his teachers William F. Sharpe and Man Mohan Sharma because they are "the kind of professors who made you think out of the box." Career In 1981 he started to help his father Dhirubhai Ambani run their family business, Reliance Industries Limited. By this time, it had already expanded