Finding the Fourth Proportional to 82.41, 123.58 and 28.27

Step by Step Solution

1. Step 1: Write the proportion equation
   82.41 : 123.58 = 28.27 : x
2. Step 2: Convert to fraction form
   82.41/123.58 = 28.27/x
3. Step 3: Cross multiply
   82.41x = 123.58 × 28.27
4. Step 4: Simplify right side
   82.41x = 3,493.61
5. Step 5: Solve for x
   x = 3,493.61/82.41
6. Step 6: Final answer
   x = 42.39