India is now home to four of the 10 richest people in the world , the highest number for a single country . Forbes crowns American investor Warren Buffett as world 's richest person . The magazine says he is worth $US1.08 billion ($A$1.27 billion) and has a net worth of $US2.06 billion. Russia replaces Germany as No . 2 country with 87 billionaires . Facebook founder Mark Zuckerberg may be youngest self-made billionaire in history .
Forbes crowns American investor Warren Buffett as world 's richest person . The magazine says he is worth $US1.08 billion ($A$1.27 billion) and has a net worth of $US2.06 billion. Russia replaces Germany as No . 2 country with 87 billionaires . Facebook founder Mark Zuckerberg may be youngest self-made billionaire in history .