Finding the Fourth Proportional to 123,158.95, 169,961.24 and 72,159.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158.95 : 169,961.24 = 72,159.47 : x
2. Step 2: Convert to fraction form
   123,158.95/169,961.24 = 72,159.47/x
3. Step 3: Cross multiply
   123,158.95x = 169,961.24 × 72,159.47
4. Step 4: Simplify right side
   123,158.95x = 12,264,313,333.65
5. Step 5: Solve for x
   x = 12,264,313,333.65/123,158.95
6. Step 6: Final answer
   x = 99,581.18