Finding the Fourth Proportional to 156,311.30, 215,695.04 and 88,333.47

Step by Step Solution

1. Step 1: Write the proportion equation
   156,311.30 : 215,695.04 = 88,333.47 : x
2. Step 2: Convert to fraction form
   156,311.30/215,695.04 = 88,333.47/x
3. Step 3: Cross multiply
   156,311.30x = 215,695.04 × 88,333.47
4. Step 4: Simplify right side
   156,311.30x = 19,053,090,903.32
5. Step 5: Solve for x
   x = 19,053,090,903.32/156,311.30
6. Step 6: Final answer
   x = 121,891.96