Finding the Fourth Proportional to 123,158.76, 169,960.98 and 72,159.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158.76 : 169,960.98 = 72,159.29 : x
2. Step 2: Convert to fraction form
   123,158.76/169,960.98 = 72,159.29/x
3. Step 3: Cross multiply
   123,158.76x = 169,960.98 × 72,159.29
4. Step 4: Simplify right side
   123,158.76x = 12,264,262,794.70
5. Step 5: Solve for x
   x = 12,264,262,794.70/123,158.76
6. Step 6: Final answer
   x = 99,580.92