Microsoft co-founder Bill Gates has once again topped Forbes magazine list of the world's richest billionaires, for the fourth straight year, with a fortune of $86 billion.
Next is Berkshire Hathaway chief Warren Buffett, with an estimated wealth of $75.6billion, followed by Amazon founder Jeff Bezos, with a net worth of $72.8billion. Number four is Amancio Ortega - Inditex fashion group founder $71.3billion, while number 5 is Facebook founder Mark Zuckerberg with $56billion