Finding the Fourth Proportional to 71,025.68, 106,436.98 and 52,157.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,025.68 : 106,436.98 = 52,157.72 : x
2. Step 2: Convert to fraction form
   71,025.68/106,436.98 = 52,157.72/x
3. Step 3: Cross multiply
   71,025.68x = 106,436.98 × 52,157.72
4. Step 4: Simplify right side
   71,025.68x = 5,551,510,200.49
5. Step 5: Solve for x
   x = 5,551,510,200.49/71,025.68
6. Step 6: Final answer
   x = 78,162.01