Finding the Fourth Proportional to 639,504.72, 882,516.67 and 353,025

Step by Step Solution

1. Step 1: Write the proportion equation
   639,504.72 : 882,516.67 = 353,025 : x
2. Step 2: Convert to fraction form
   639,504.72/882,516.67 = 353,025/x
3. Step 3: Cross multiply
   639,504.72x = 882,516.67 × 353,025
4. Step 4: Simplify right side
   639,504.72x = 311,550,447,426.75
5. Step 5: Solve for x
   x = 311,550,447,426.75/639,504.72
6. Step 6: Final answer
   x = 487,174.59