Finding the Fourth Proportional to 42.50, 58.53 and 37.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42.50 : 58.53 = 37.31 : x
2. Step 2: Convert to fraction form
   42.50/58.53 = 37.31/x
3. Step 3: Cross multiply
   42.50x = 58.53 × 37.31
4. Step 4: Simplify right side
   42.50x = 2,183.75
5. Step 5: Solve for x
   x = 2,183.75/42.50
6. Step 6: Final answer
   x = 51.38