Finding the Fourth Proportional to 55,168.95, 82,728.89 and 15,717.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,168.95 : 82,728.89 = 15,717.15 : x
2. Step 2: Convert to fraction form
   55,168.95/82,728.89 = 15,717.15/x
3. Step 3: Cross multiply
   55,168.95x = 82,728.89 × 15,717.15
4. Step 4: Simplify right side
   55,168.95x = 1,300,262,294.88
5. Step 5: Solve for x
   x = 1,300,262,294.88/55,168.95
6. Step 6: Final answer
   x = 23,568.73