Finding the Fourth Proportional to 72.37, 108.49 and 28.44

Step by Step Solution

1. Step 1: Write the proportion equation
   72.37 : 108.49 = 28.44 : x
2. Step 2: Convert to fraction form
   72.37/108.49 = 28.44/x
3. Step 3: Cross multiply
   72.37x = 108.49 × 28.44
4. Step 4: Simplify right side
   72.37x = 3,085.38
5. Step 5: Solve for x
   x = 3,085.38/72.37
6. Step 6: Final answer
   x = 42.63