According to the Daily Mail, the boost came on day five of the group's eight-day trek to the summit of Africa's highest peak at a time when morale was low due to exhaustion and altitude.
Take That's Gary Barlow said: "We're all near to reaching mental and physical exhaustion up here so to know that everyone is behind us and giving whatever they can is just so humbling.
"Knowing that we've raised this fantastic amount of money in cash strapped times is the push we need to get us to that summit!"
The group, which also includes Alesha Dixon, Cheryl Cole, Kimberly Walsh, Ronan Keating and Denise van Outen, will not be given another fundraising total until they reach the summit.
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