Finding the Fourth Proportional to 82.84, 123.98 and 76.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82.84 : 123.98 = 76.18 : x
2. Step 2: Convert to fraction form
   82.84/123.98 = 76.18/x
3. Step 3: Cross multiply
   82.84x = 123.98 × 76.18
4. Step 4: Simplify right side
   82.84x = 9,444.80
5. Step 5: Solve for x
   x = 9,444.80/82.84
6. Step 6: Final answer
   x = 114.01