Bill gates tops world richest again,check Donald trumps position as he's reduces

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

Former world's richest man Carlos Slim comes in six with $54.5billion, while Oracle co-founder Larry Ellison came it at number seven with $52.2billion in the bank.

Republican mega-donors Charles and David Koch are in eighth and ninth with $48.3billion, while Michael Bloomberg rounded the top 10 out with $47.5billion. 

Meanwhile, Donald Trump's wealth plummeted down the list to number 544 with an estimated net worth of $3.5billion with $1billion being slashed from his valuation in the same list last year.