Finding the Fourth Proportional to 81,631.91, 112,655 and 47,662.13

Step by Step Solution

1. Step 1: Write the proportion equation
   81,631.91 : 112,655 = 47,662.13 : x
2. Step 2: Convert to fraction form
   81,631.91/112,655 = 47,662.13/x
3. Step 3: Cross multiply
   81,631.91x = 112,655 × 47,662.13
4. Step 4: Simplify right side
   81,631.91x = 5,369,377,255.15
5. Step 5: Solve for x
   x = 5,369,377,255.15/81,631.91
6. Step 6: Final answer
   x = 65,775.47