Finding the Fourth Proportional to 156,689.83, 234,859.78 and 67,810.15

Step by Step Solution

1. Step 1: Write the proportion equation
   156,689.83 : 234,859.78 = 67,810.15 : x
2. Step 2: Convert to fraction form
   156,689.83/234,859.78 = 67,810.15/x
3. Step 3: Cross multiply
   156,689.83x = 234,859.78 × 67,810.15
4. Step 4: Simplify right side
   156,689.83x = 15,925,876,910.77
5. Step 5: Solve for x
   x = 15,925,876,910.77/156,689.83
6. Step 6: Final answer
   x = 101,639.51