Finding the Fourth Proportional to 42.56, 63.82 and 37.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42.56 : 63.82 = 37.18 : x
2. Step 2: Convert to fraction form
   42.56/63.82 = 37.18/x
3. Step 3: Cross multiply
   42.56x = 63.82 × 37.18
4. Step 4: Simplify right side
   42.56x = 2,372.83
5. Step 5: Solve for x
   x = 2,372.83/42.56
6. Step 6: Final answer
   x = 55.75