Finding the Fourth Proportional to 82.71, 123.88 and 62.17

Step by Step Solution

1. Step 1: Write the proportion equation
   82.71 : 123.88 = 62.17 : x
2. Step 2: Convert to fraction form
   82.71/123.88 = 62.17/x
3. Step 3: Cross multiply
   82.71x = 123.88 × 62.17
4. Step 4: Simplify right side
   82.71x = 7,700.69
5. Step 5: Solve for x
   x = 7,700.69/82.71
6. Step 6: Final answer
   x = 93.10