Finding the Fourth Proportional to 159,500.56, 220,115.76 and 91,530

Step by Step Solution

1. Step 1: Write the proportion equation
   159,500.56 : 220,115.76 = 91,530 : x
2. Step 2: Convert to fraction form
   159,500.56/220,115.76 = 91,530/x
3. Step 3: Cross multiply
   159,500.56x = 220,115.76 × 91,530
4. Step 4: Simplify right side
   159,500.56x = 20,147,195,512.80
5. Step 5: Solve for x
   x = 20,147,195,512.80/159,500.56
6. Step 6: Final answer
   x = 126,314.26