Finding the Fourth Proportional to 42.24, 62.82 and 39.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42.24 : 62.82 = 39.69 : x
2. Step 2: Convert to fraction form
   42.24/62.82 = 39.69/x
3. Step 3: Cross multiply
   42.24x = 62.82 × 39.69
4. Step 4: Simplify right side
   42.24x = 2,493.33
5. Step 5: Solve for x
   x = 2,493.33/42.24
6. Step 6: Final answer
   x = 59.03