Finding the Fourth Proportional to 123,359.97, 170,238.17 and 72,373.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,359.97 : 170,238.17 = 72,373.59 : x
2. Step 2: Convert to fraction form
   123,359.97/170,238.17 = 72,373.59/x
3. Step 3: Cross multiply
   123,359.97x = 170,238.17 × 72,373.59
4. Step 4: Simplify right side
   123,359.97x = 12,320,747,156.06
5. Step 5: Solve for x
   x = 12,320,747,156.06/123,359.97
6. Step 6: Final answer
   x = 99,876.38