Finding the Fourth Proportional to 55,117.72, 82,680.78 and 17,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   55,117.72 : 82,680.78 = 17,162.20 : x
2. Step 2: Convert to fraction form
   55,117.72/82,680.78 = 17,162.20/x
3. Step 3: Cross multiply
   55,117.72x = 82,680.78 × 17,162.20
4. Step 4: Simplify right side
   55,117.72x = 1,418,984,082.52
5. Step 5: Solve for x
   x = 1,418,984,082.52/55,117.72
6. Step 6: Final answer
   x = 25,744.61