Finding the Fourth Proportional to 42.07, 57.69 and 37.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42.07 : 57.69 = 37.96 : x
2. Step 2: Convert to fraction form
   42.07/57.69 = 37.96/x
3. Step 3: Cross multiply
   42.07x = 57.69 × 37.96
4. Step 4: Simplify right side
   42.07x = 2,189.91
5. Step 5: Solve for x
   x = 2,189.91/42.07
6. Step 6: Final answer
   x = 52.05