Finding the Fourth Proportional to 58,470.57, 80,726.27 and 40,559.31

Step by Step Solution

1. Step 1: Write the proportion equation
   58,470.57 : 80,726.27 = 40,559.31 : x
2. Step 2: Convert to fraction form
   58,470.57/80,726.27 = 40,559.31/x
3. Step 3: Cross multiply
   58,470.57x = 80,726.27 × 40,559.31
4. Step 4: Simplify right side
   58,470.57x = 3,274,201,810.07
5. Step 5: Solve for x
   x = 3,274,201,810.07/58,470.57
6. Step 6: Final answer
   x = 55,997.43