Finding the Fourth Proportional to 123,159.51, 169,962.02 and 72,160.04

Step by Step Solution

1. Step 1: Write the proportion equation
   123,159.51 : 169,962.02 = 72,160.04 : x
2. Step 2: Convert to fraction form
   123,159.51/169,962.02 = 72,160.04/x
3. Step 3: Cross multiply
   123,159.51x = 169,962.02 × 72,160.04
4. Step 4: Simplify right side
   123,159.51x = 12,264,464,951.07
5. Step 5: Solve for x
   x = 12,264,464,951.07/123,159.51
6. Step 6: Final answer
   x = 99,581.96