Finding the Fourth Proportional to 156,559.46, 234,528.15 and 86,264.42

Step by Step Solution

1. Step 1: Write the proportion equation
   156,559.46 : 234,528.15 = 86,264.42 : x
2. Step 2: Convert to fraction form
   156,559.46/234,528.15 = 86,264.42/x
3. Step 3: Cross multiply
   156,559.46x = 234,528.15 × 86,264.42
4. Step 4: Simplify right side
   156,559.46x = 20,231,434,833.42
5. Step 5: Solve for x
   x = 20,231,434,833.42/156,559.46
6. Step 6: Final answer
   x = 129,225.25