Finding the Fourth Proportional to 71,816.12, 99,131.82 and 51,684.92

Step by Step Solution

1. Step 1: Write the proportion equation
   71,816.12 : 99,131.82 = 51,684.92 : x
2. Step 2: Convert to fraction form
   71,816.12/99,131.82 = 51,684.92/x
3. Step 3: Cross multiply
   71,816.12x = 99,131.82 × 51,684.92
4. Step 4: Simplify right side
   71,816.12x = 5,123,620,186.15
5. Step 5: Solve for x
   x = 5,123,620,186.15/71,816.12
6. Step 6: Final answer
   x = 71,343.60