The Capital balances are ascertained by preparing Statement of Affairs.
Explanation: It is a statement showing various assets and liabilities of the business on a particular date. It can be prepared with both opening and closing balances. A statement prepared with opening assets and liabilities is known as Opening Statement of Affairs (to ascertain the opening capital). Similarly, a statement prepared with closing assets and liabilities is known as Closing Statement of Affairs (to ascertain the closing capital).