Finding the Fourth Proportional to 72.44, 108.72 and 42.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72.44 : 108.72 = 42.03 : x
2. Step 2: Convert to fraction form
   72.44/108.72 = 42.03/x
3. Step 3: Cross multiply
   72.44x = 108.72 × 42.03
4. Step 4: Simplify right side
   72.44x = 4,569.50
5. Step 5: Solve for x
   x = 4,569.50/72.44
6. Step 6: Final answer
   x = 63.08