Finding the Fourth Proportional to 82.18, 123.17 and 62.86

Step by Step Solution

1. Step 1: Write the proportion equation
   82.18 : 123.17 = 62.86 : x
2. Step 2: Convert to fraction form
   82.18/123.17 = 62.86/x
3. Step 3: Cross multiply
   82.18x = 123.17 × 62.86
4. Step 4: Simplify right side
   82.18x = 7,742.32
5. Step 5: Solve for x
   x = 7,742.32/82.18
6. Step 6: Final answer
   x = 94.21