Finding the Fourth Proportional to 89,820.20, 123,952.76 and 49,535.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,820.20 : 123,952.76 = 49,535.60 : x
2. Step 2: Convert to fraction form
   89,820.20/123,952.76 = 49,535.60/x
3. Step 3: Cross multiply
   89,820.20x = 123,952.76 × 49,535.60
4. Step 4: Simplify right side
   89,820.20x = 6,140,074,338.26
5. Step 5: Solve for x
   x = 6,140,074,338.26/89,820.20
6. Step 6: Final answer
   x = 68,359.62