Finding the Fourth Proportional to 82.98, 124.49 and 82.74

Step by Step Solution

1. Step 1: Write the proportion equation
   82.98 : 124.49 = 82.74 : x
2. Step 2: Convert to fraction form
   82.98/124.49 = 82.74/x
3. Step 3: Cross multiply
   82.98x = 124.49 × 82.74
4. Step 4: Simplify right side
   82.98x = 10,299.89
5. Step 5: Solve for x
   x = 10,299.89/82.98
6. Step 6: Final answer
   x = 124.12