Finding the Fourth Proportional to 132,512.34, 198,689.48 and 89,870.30

Step by Step Solution

1. Step 1: Write the proportion equation
   132,512.34 : 198,689.48 = 89,870.30 : x
2. Step 2: Convert to fraction form
   132,512.34/198,689.48 = 89,870.30/x
3. Step 3: Cross multiply
   132,512.34x = 198,689.48 × 89,870.30
4. Step 4: Simplify right side
   132,512.34x = 17,856,281,731.65
5. Step 5: Solve for x
   x = 17,856,281,731.65/132,512.34
6. Step 6: Final answer
   x = 134,751.84