A majority of capital raised in addition (4)
I believe the answer is:
also
'in addition' is the definition.
(synonyms)
'a majority of capital raised' is the wordplay.
'majority of' means to remove the last letter.
'capital' becomes 'oslo' (capital of Norway).
'raised' shows that the letters should be reversed in order (going up in a down clue).
'oslo' with its last letter taken away is 'osl'.
'osl' in reverse letter order is 'lso'.
'a'+'lso'='ALSO'
(Other definitions for also that I've seen before include "To boot" , "an indication of more to come" , "As well, in addition" , "Likewise" , "on top" .)