Finding the Fourth Proportional to 669,061.89, 923,308.18 and 363,138.71

Step by Step Solution

1. Step 1: Write the proportion equation
   669,061.89 : 923,308.18 = 363,138.71 : x
2. Step 2: Convert to fraction form
   669,061.89/923,308.18 = 363,138.71/x
3. Step 3: Cross multiply
   669,061.89x = 923,308.18 × 363,138.71
4. Step 4: Simplify right side
   669,061.89x = 335,288,941,417.65
5. Step 5: Solve for x
   x = 335,288,941,417.65/669,061.89
6. Step 6: Final answer
   x = 501,132.92