Finding the Fourth Proportional to 42.18, 63.38 and 37.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42.18 : 63.38 = 37.22 : x
2. Step 2: Convert to fraction form
   42.18/63.38 = 37.22/x
3. Step 3: Cross multiply
   42.18x = 63.38 × 37.22
4. Step 4: Simplify right side
   42.18x = 2,359.00
5. Step 5: Solve for x
   x = 2,359.00/42.18
6. Step 6: Final answer
   x = 55.93