Finding the Fourth Proportional to 81,540.86, 112,422.22 and 52,809.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,540.86 : 112,422.22 = 52,809.76 : x
2. Step 2: Convert to fraction form
   81,540.86/112,422.22 = 52,809.76/x
3. Step 3: Cross multiply
   81,540.86x = 112,422.22 × 52,809.76
4. Step 4: Simplify right side
   81,540.86x = 5,936,990,456.87
5. Step 5: Solve for x
   x = 5,936,990,456.87/81,540.86
6. Step 6: Final answer
   x = 72,810.01