Mukesh and Nita Ambani's youngest child Anant is engaged to Radhika Merchant. The couple is expected to tie the knot in December this year.Anant's sister Isha got engaged to Anand Piramal earlier this month. Piramal proposed to Isha on May 5.Less than a week after his sister's engagement, Anant appears all set to follow her footsteps. Anand and Isha's engagement took place on May 7, in a star-studded affair. The wedding is set to take place in December this year.