Finding the Fourth Proportional to 81,578.34, 112,578.42 and 47,610.29

Step by Step Solution

1. Step 1: Write the proportion equation
   81,578.34 : 112,578.42 = 47,610.29 : x
2. Step 2: Convert to fraction form
   81,578.34/112,578.42 = 47,610.29/x
3. Step 3: Cross multiply
   81,578.34x = 112,578.42 × 47,610.29
4. Step 4: Simplify right side
   81,578.34x = 5,359,891,223.94
5. Step 5: Solve for x
   x = 5,359,891,223.94/81,578.34
6. Step 6: Final answer
   x = 65,702.38