Finding the Fourth Proportional to 156,814.18, 216,404.46 and 85,194.82

Step by Step Solution

1. Step 1: Write the proportion equation
   156,814.18 : 216,404.46 = 85,194.82 : x
2. Step 2: Convert to fraction form
   156,814.18/216,404.46 = 85,194.82/x
3. Step 3: Cross multiply
   156,814.18x = 216,404.46 × 85,194.82
4. Step 4: Simplify right side
   156,814.18x = 18,436,539,016.90
5. Step 5: Solve for x
   x = 18,436,539,016.90/156,814.18
6. Step 6: Final answer
   x = 117,569.34