Finding the Fourth Proportional to 57,550.30, 86,210.63 and 45,724.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,550.30 : 86,210.63 = 45,724.10 : x
2. Step 2: Convert to fraction form
   57,550.30/86,210.63 = 45,724.10/x
3. Step 3: Cross multiply
   57,550.30x = 86,210.63 × 45,724.10
4. Step 4: Simplify right side
   57,550.30x = 3,941,902,978.97
5. Step 5: Solve for x
   x = 3,941,902,978.97/57,550.30
6. Step 6: Final answer
   x = 68,494.92