#	Name	Net worth	Source of wealth	Country
Software	Bill Gates, Larry Ellison	$110 billion	Microsoft, Oracle	U.S.
1	Carlos Slim Helu	$73 billion	Telecom	Mexico
2	Bill Gates	$67 billion	Microsoft	U.S.
3	Amancio Ortega	$57 billion	Zara	Spain
4	Warren Buffett	$53.5 billion	Berkshire Hathaway	U.S.
5	Larry Ellison	$43 billion	Oracle	U.S.