Capital to put out, keeping last of money (5)
I believe the answer is:
tokyo
'capital' is the definition.
(Tokyo is an example)
'to put out keeping last of money' is the wordplay.
'put out' becomes 'ko' (abbreviation for knock out**).
'keeping' is an insertion indicator.
'last of' says to take the final letters.
The final letter of 'money' is 'y'.
'ko' enclosing 'y' is 'kyo'.
'to'+'kyo'='TOKYO'
(Other definitions for tokyo that I've seen before include "City once called Edo" , "Japanese capital" , "Far Eastern capital" , "Large Japanese city" , "Capital of Japan" .)