Finding the Fourth Proportional to 125,016.57, 172,343.52 and 89,144.37

Step by Step Solution

1. Step 1: Write the proportion equation
   125,016.57 : 172,343.52 = 89,144.37 : x
2. Step 2: Convert to fraction form
   125,016.57/172,343.52 = 89,144.37/x
3. Step 3: Cross multiply
   125,016.57x = 172,343.52 × 89,144.37
4. Step 4: Simplify right side
   125,016.57x = 15,363,454,513.98
5. Step 5: Solve for x
   x = 15,363,454,513.98/125,016.57
6. Step 6: Final answer
   x = 122,891.35