Morgenthaler Ventures, Pitango Venture Capital and Menlo Ventures are all backers of the business, which has about 10 million registered users.
Check picked up $47m through an angel round and three institutional investor rounds, most recently a $24m Series C led by Menlo.
Morgenthaler and Pitango, who had previously backed the business, also took part in that round.
The deal is expected to close in the fourth quarter of 2014.
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