Mukesh Ambani, the elder son of the late legendary business tycoon Dhirubhai Ambani, has played a pivotal role in taking Reliance Industries Ltd (RIL), the world's largest oil refining complex, to the pinnacle of success. Now the 19th wealthiest person in the world with a net worth of $44.1 billion (£35.1bn), we track the journey of RIL’s owner, who is as well known for hogging headlines for his lavish lifestyle, including paying Beyoncé to put on a private show at his daughter’s pre-wedding party, as he is for carrying forward his father's legacy.