Finding the Fourth Proportional to 123,892.67, 170,957.34 and 72,894.17

Step by Step Solution

1. Step 1: Write the proportion equation
   123,892.67 : 170,957.34 = 72,894.17 : x
2. Step 2: Convert to fraction form
   123,892.67/170,957.34 = 72,894.17/x
3. Step 3: Cross multiply
   123,892.67x = 170,957.34 × 72,894.17
4. Step 4: Simplify right side
   123,892.67x = 12,461,792,549.92
5. Step 5: Solve for x
   x = 12,461,792,549.92/123,892.67
6. Step 6: Final answer
   x = 100,585.39