Bollywood super duper star  Salman Khan’s `Sultan` has  earned Rs 500 crore at the international box office and it is still going strong.This makes it the fifth highest grossing Bollywood film ever. `Dhoom 3` (Rs 542 crore), `Baahubali` (Rs 600 crore), `Bajrangi Bhaijaan` (Rs 626 crore) and `PK` Rs 792 crore), in that order, are the other big earners.