Finding the Fourth Proportional to 88,720.10, 133,080.15 and 42,064.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,720.10 : 133,080.15 = 42,064.10 : x
2. Step 2: Convert to fraction form
   88,720.10/133,080.15 = 42,064.10/x
3. Step 3: Cross multiply
   88,720.10x = 133,080.15 × 42,064.10
4. Step 4: Simplify right side
   88,720.10x = 5,597,896,737.62
5. Step 5: Solve for x
   x = 5,597,896,737.62/88,720.10
6. Step 6: Final answer
   x = 63,096.15