Finding the Fourth Proportional to 82.72, 123.42 and 75.76

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 123.42 = 75.76 : x
2. Step 2: Convert to fraction form
   82.72/123.42 = 75.76/x
3. Step 3: Cross multiply
   82.72x = 123.42 × 75.76
4. Step 4: Simplify right side
   82.72x = 9,350.30
5. Step 5: Solve for x
   x = 9,350.30/82.72
6. Step 6: Final answer
   x = 113.04