Finding the Fourth Proportional to 131,355.82, 197,031.61 and 89,130.88

Step by Step Solution

1. Step 1: Write the proportion equation
   131,355.82 : 197,031.61 = 89,130.88 : x
2. Step 2: Convert to fraction form
   131,355.82/197,031.61 = 89,130.88/x
3. Step 3: Cross multiply
   131,355.82x = 197,031.61 × 89,130.88
4. Step 4: Simplify right side
   131,355.82x = 17,561,600,787.12
5. Step 5: Solve for x
   x = 17,561,600,787.12/131,355.82
6. Step 6: Final answer
   x = 133,694.88