Finding the Fourth Proportional to 156,784.50, 216,364.94 and 88,799.78

Step by Step Solution

1. Step 1: Write the proportion equation
   156,784.50 : 216,364.94 = 88,799.78 : x
2. Step 2: Convert to fraction form
   156,784.50/216,364.94 = 88,799.78/x
3. Step 3: Cross multiply
   156,784.50x = 216,364.94 × 88,799.78
4. Step 4: Simplify right side
   156,784.50x = 19,213,158,627.71
5. Step 5: Solve for x
   x = 19,213,158,627.71/156,784.50
6. Step 6: Final answer
   x = 122,545.01