who is the most richest person in australia?
['Gina Rinehart: $14.8 billion. ... ', 'Harry Triguboff: $9 billion. ... ', 'Anthony Pratt: $6.8 billion. ... ', 'Frank Lowy: $6.5 billion. ... ', 'Scott Farquhar and Mike Cannon-Brookes: $6.4 billion. ... ', 'Andrew Forrest: $4.3 billion. ... ', 'John Gandel: $4 billion. ... ', 'James Packer: $3.6 billion.']