Finding the Fourth Proportional to 89,166.88, 132,881.82 and 86,463.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,166.88 : 132,881.82 = 86,463.50 : x
2. Step 2: Convert to fraction form
   89,166.88/132,881.82 = 86,463.50/x
3. Step 3: Cross multiply
   89,166.88x = 132,881.82 × 86,463.50
4. Step 4: Simplify right side
   89,166.88x = 11,489,427,002.38
5. Step 5: Solve for x
   x = 11,489,427,002.38/89,166.88
6. Step 6: Final answer
   x = 128,853.08