Go to company website and look for the "investors" section .
This information is usually available under “about the company” or under “investor relations”.
For Example: Apple.com
Under About Apple, you will find the Investor Relations section. Click on Financial Information and you will find the latest annual reports (10-K annual report is best when available). In the 10-K report, look for the Consolidated Balance Sheet (search document via CTRL+F).