How should a corporation estimate the amount of financing it must raise externally during a given year?

Question:

How should a estimate the amount of financing it must raise externally during a given year? Once that amount is known, what other decision must be made?
Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...