Finding the Fourth Proportional to 113,471.80, 156,577.48 and 65,718.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,471.80 : 156,577.48 = 65,718.52 : x
2. Step 2: Convert to fraction form
   113,471.80/156,577.48 = 65,718.52/x
3. Step 3: Cross multiply
   113,471.80x = 156,577.48 × 65,718.52
4. Step 4: Simplify right side
   113,471.80x = 10,290,040,250.93
5. Step 5: Solve for x
   x = 10,290,040,250.93/113,471.80
6. Step 6: Final answer
   x = 90,683.68