Finding the Fourth Proportional to 82.92, 124.23 and 42.24

Step by Step Solution

1. Step 1: Write the proportion equation
   82.92 : 124.23 = 42.24 : x
2. Step 2: Convert to fraction form
   82.92/124.23 = 42.24/x
3. Step 3: Cross multiply
   82.92x = 124.23 × 42.24
4. Step 4: Simplify right side
   82.92x = 5,247.48
5. Step 5: Solve for x
   x = 5,247.48/82.92
6. Step 6: Final answer
   x = 63.28