Foreign exchange reserves zoomed $4.212 billion to $193.124 billion for the week ended February 23, according to the weekly supplement released by the RBI today.Foreign currency assets moved up $4.213 billion to $186.128 billion. Gold reserves and SDRs were unchanged at $6.529 billion and $2 million, respectively.The Reserve Tranche Position with the IMF declined $1 million to $465 million.