Finding the Fourth Proportional to 112,749.92, 155,622.86 and 65,031.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,749.92 : 155,622.86 = 65,031.92 : x
2. Step 2: Convert to fraction form
   112,749.92/155,622.86 = 65,031.92/x
3. Step 3: Cross multiply
   112,749.92x = 155,622.86 × 65,031.92
4. Step 4: Simplify right side
   112,749.92x = 10,120,453,381.69
5. Step 5: Solve for x
   x = 10,120,453,381.69/112,749.92
6. Step 6: Final answer
   x = 89,760.18