Finding the Fourth Proportional to 113,612.12, 156,766.24 and 65,856.12

Step by Step Solution

1. Step 1: Write the proportion equation
   113,612.12 : 156,766.24 = 65,856.12 : x
2. Step 2: Convert to fraction form
   113,612.12/156,766.24 = 65,856.12/x
3. Step 3: Cross multiply
   113,612.12x = 156,766.24 × 65,856.12
4. Step 4: Simplify right side
   113,612.12x = 10,324,016,313.39
5. Step 5: Solve for x
   x = 10,324,016,313.39/113,612.12
6. Step 6: Final answer
   x = 90,870.73