How do you find total stockholders' equity of you have the following information?

Common Stock, $1 par, authorized
400,000 shares, issued 290,000 shares 290,000
Additional paid-in capital 180,000
What is retained earnings?

Insufficient information.

This is like saying 100 + 150 + x = y
and then trying to solve for either x or y. Impossible. You've got to have other info available.