Finding the Fourth Proportional to 89,152.84, 132,932.21 and 86,703.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,152.84 : 132,932.21 = 86,703.40 : x
2. Step 2: Convert to fraction form
   89,152.84/132,932.21 = 86,703.40/x
3. Step 3: Cross multiply
   89,152.84x = 132,932.21 × 86,703.40
4. Step 4: Simplify right side
   89,152.84x = 11,525,674,576.51
5. Step 5: Solve for x
   x = 11,525,674,576.51/89,152.84
6. Step 6: Final answer
   x = 129,279.95