Finding the Fourth Proportional to 89,956.17, 124,664.58 and 88,687.71

Step by Step Solution

1. Step 1: Write the proportion equation
   89,956.17 : 124,664.58 = 88,687.71 : x
2. Step 2: Convert to fraction form
   89,956.17/124,664.58 = 88,687.71/x
3. Step 3: Cross multiply
   89,956.17x = 124,664.58 × 88,687.71
4. Step 4: Simplify right side
   89,956.17x = 11,056,216,118.31
5. Step 5: Solve for x
   x = 11,056,216,118.31/89,956.17
6. Step 6: Final answer
   x = 122,906.70