Develop a comprehensive cash flow forecasting model tailored to Evergrande's operations, focusing on anticipating potential liquidity challenges amidst dynamic market conditions. Integrate key elements including operating, investing, and financing cash flows to provide a holistic perspective on the company's cash position.

Explore how applying inventory valuation methods such as FIFO (First-In-First-Out) and LIFO (Last-In-First-Out) could impact the operating cash flow projection, especially in times of fluctuating property sales and costs. Analyze how variations in cash inflows and outflows resulting from different inventory valuation approaches could have influenced Evergrande's ability to manage liquidity effectively and make timely financial decisions.