Finding the Fourth Proportional to 132,549.34, 198,748.71 and 90,480.37

Step by Step Solution

1. Step 1: Write the proportion equation
   132,549.34 : 198,748.71 = 90,480.37 : x
2. Step 2: Convert to fraction form
   132,549.34/198,748.71 = 90,480.37/x
3. Step 3: Cross multiply
   132,549.34x = 198,748.71 × 90,480.37
4. Step 4: Simplify right side
   132,549.34x = 17,982,856,320.95
5. Step 5: Solve for x
   x = 17,982,856,320.95/132,549.34
6. Step 6: Final answer
   x = 135,669.15