Finding the Fourth Proportional to 144,592.59, 199,434.78 and 88,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   144,592.59 : 199,434.78 = 88,007.61 : x
2. Step 2: Convert to fraction form
   144,592.59/199,434.78 = 88,007.61/x
3. Step 3: Cross multiply
   144,592.59x = 199,434.78 × 88,007.61
4. Step 4: Simplify right side
   144,592.59x = 17,551,778,338.68
5. Step 5: Solve for x
   x = 17,551,778,338.68/144,592.59
6. Step 6: Final answer
   x = 121,387.81