Finding the Fourth Proportional to 315,139.35, 472,314.83 and 157,411.83

Step by Step Solution

1. Step 1: Write the proportion equation
   315,139.35 : 472,314.83 = 157,411.83 : x
2. Step 2: Convert to fraction form
   315,139.35/472,314.83 = 157,411.83/x
3. Step 3: Cross multiply
   315,139.35x = 472,314.83 × 157,411.83
4. Step 4: Simplify right side
   315,139.35x = 74,347,940,939.38
5. Step 5: Solve for x
   x = 74,347,940,939.38/315,139.35
6. Step 6: Final answer
   x = 235,920.84