Finding the Fourth Proportional to 42.37, 58.42 and 39.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42.37 : 58.42 = 39.33 : x
2. Step 2: Convert to fraction form
   42.37/58.42 = 39.33/x
3. Step 3: Cross multiply
   42.37x = 58.42 × 39.33
4. Step 4: Simplify right side
   42.37x = 2,297.56
5. Step 5: Solve for x
   x = 2,297.56/42.37
6. Step 6: Final answer
   x = 54.23