Finding the Fourth Proportional to 82.28, 123.49 and 62.91

Step by Step Solution

1. Step 1: Write the proportion equation
   82.28 : 123.49 = 62.91 : x
2. Step 2: Convert to fraction form
   82.28/123.49 = 62.91/x
3. Step 3: Cross multiply
   82.28x = 123.49 × 62.91
4. Step 4: Simplify right side
   82.28x = 7,768.83
5. Step 5: Solve for x
   x = 7,768.83/82.28
6. Step 6: Final answer
   x = 94.42