Mumbai: Megastar Amitabh Bachchan has once again claimed his hot seat in the fourth season of the popular reality show ‘Kaun Banega Crorepati’. The 67-year-old ‘Shehenshah’ has proved to the world that ‘Baadshah’ Shah Rukh Khan, who hosted the third season of the show, doesn’t stand a chance when pitted against him. Putting all speculations to rest, an official announcement at a press conference in Mumbai later today, stated that Big B has once again been roped in to host the show, which had given his career a new lease of life in 2001.