Finding the Fourth Proportional to 141,200.10, 211,841.15 and 56,916.76

Step by Step Solution

1. Step 1: Write the proportion equation
   141,200.10 : 211,841.15 = 56,916.76 : x
2. Step 2: Convert to fraction form
   141,200.10/211,841.15 = 56,916.76/x
3. Step 3: Cross multiply
   141,200.10x = 211,841.15 × 56,916.76
4. Step 4: Simplify right side
   141,200.10x = 12,057,311,892.67
5. Step 5: Solve for x
   x = 12,057,311,892.67/141,200.10
6. Step 6: Final answer
   x = 85,391.67