Finding the Fourth Proportional to 42.58, 58.71 and 37.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42.58 : 58.71 = 37.18 : x
2. Step 2: Convert to fraction form
   42.58/58.71 = 37.18/x
3. Step 3: Cross multiply
   42.58x = 58.71 × 37.18
4. Step 4: Simplify right side
   42.58x = 2,182.84
5. Step 5: Solve for x
   x = 2,182.84/42.58
6. Step 6: Final answer
   x = 51.26