Finding the Fourth Proportional to 331,555.95, 497,411.69 and 131,887.71

Step by Step Solution

1. Step 1: Write the proportion equation
   331,555.95 : 497,411.69 = 131,887.71 : x
2. Step 2: Convert to fraction form
   331,555.95/497,411.69 = 131,887.71/x
3. Step 3: Cross multiply
   331,555.95x = 497,411.69 × 131,887.71
4. Step 4: Simplify right side
   331,555.95x = 65,602,488,061.89
5. Step 5: Solve for x
   x = 65,602,488,061.89/331,555.95
6. Step 6: Final answer
   x = 197,862.50