Finding the Fourth Proportional to 87,485.67, 131,386.59 and 80,452.71

Step by Step Solution

1. Step 1: Write the proportion equation
   87,485.67 : 131,386.59 = 80,452.71 : x
2. Step 2: Convert to fraction form
   87,485.67/131,386.59 = 80,452.71/x
3. Step 3: Cross multiply
   87,485.67x = 131,386.59 × 80,452.71
4. Step 4: Simplify right side
   87,485.67x = 10,570,407,223.16
5. Step 5: Solve for x
   x = 10,570,407,223.16/87,485.67
6. Step 6: Final answer
   x = 120,824.44