Name the Social entrepreneur from Tamil Nadu, who was ranked 45th in the Fortune magazine's 2019 list of the world's greatest leaders for inventing low cost pad making machine.

Arunachalam Muruganantham, inventor of a low-cost sanitary pad-making machine and grassroots mechanism has been featured in Fortune magazine's 2019 list of world's 100 greatest leaders.He is a social entrepreneur from Tamil Nadu.He ranked 45th in the list released by the American publication. The hero of the Oscar-winning documentary short "Period.End of Sentence" has been awarded a Padma Shri in 2016 and was named TIME magazines 2014 list of 100 Most Influential People in the World. Other top awardees : Bill and Melinda Gates - for the work of their charitable organisation Bill & Melinda Gates Foundation. Jacinda Ardern - for her response to Christchurch mosque shootings in February Robert Mueller - for his findings of the Donald Trump campaign's collusion with Russia.