Finding the Fourth Proportional to 131,472.76, 181,469.55 and 77,776.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,472.76 : 181,469.55 = 77,776.42 : x
2. Step 2: Convert to fraction form
   131,472.76/181,469.55 = 77,776.42/x
3. Step 3: Cross multiply
   131,472.76x = 181,469.55 × 77,776.42
4. Step 4: Simplify right side
   131,472.76x = 14,114,051,938.01
5. Step 5: Solve for x
   x = 14,114,051,938.01/131,472.76
6. Step 6: Final answer
   x = 107,353.43