Finding the Fourth Proportional to 81,227.68, 112,114.50 and 65,031.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,227.68 : 112,114.50 = 65,031.76 : x
2. Step 2: Convert to fraction form
   81,227.68/112,114.50 = 65,031.76/x
3. Step 3: Cross multiply
   81,227.68x = 112,114.50 × 65,031.76
4. Step 4: Simplify right side
   81,227.68x = 7,291,003,256.52
5. Step 5: Solve for x
   x = 7,291,003,256.52/81,227.68
6. Step 6: Final answer
   x = 89,760.08