Finding the Fourth Proportional to 156,294.50, 215,690.82 and 88,314.35

Step by Step Solution

1. Step 1: Write the proportion equation
   156,294.50 : 215,690.82 = 88,314.35 : x
2. Step 2: Convert to fraction form
   156,294.50/215,690.82 = 88,314.35/x
3. Step 3: Cross multiply
   156,294.50x = 215,690.82 × 88,314.35
4. Step 4: Simplify right side
   156,294.50x = 19,048,594,569.27
5. Step 5: Solve for x
   x = 19,048,594,569.27/156,294.50
6. Step 6: Final answer
   x = 121,876.29