Finding the Fourth Proportional to 325,300.20, 487,947.60 and 88,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,300.20 : 487,947.60 = 88,642.50 : x
2. Step 2: Convert to fraction form
   325,300.20/487,947.60 = 88,642.50/x
3. Step 3: Cross multiply
   325,300.20x = 487,947.60 × 88,642.50
4. Step 4: Simplify right side
   325,300.20x = 43,252,895,133
5. Step 5: Solve for x
   x = 43,252,895,133/325,300.20
6. Step 6: Final answer
   x = 132,963.01