Finding the Fourth Proportional to 131,402.10, 196,876.35 and 61,137.30

Step by Step Solution

1. Step 1: Write the proportion equation
   131,402.10 : 196,876.35 = 61,137.30 : x
2. Step 2: Convert to fraction form
   131,402.10/196,876.35 = 61,137.30/x
3. Step 3: Cross multiply
   131,402.10x = 196,876.35 × 61,137.30
4. Step 4: Simplify right side
   131,402.10x = 12,036,488,472.86
5. Step 5: Solve for x
   x = 12,036,488,472.86/131,402.10
6. Step 6: Final answer
   x = 91,600.43