Finding the Fourth Proportional to 72.48, 109.23 and 72.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72.48 : 109.23 = 72.08 : x
2. Step 2: Convert to fraction form
   72.48/109.23 = 72.08/x
3. Step 3: Cross multiply
   72.48x = 109.23 × 72.08
4. Step 4: Simplify right side
   72.48x = 7,873.30
5. Step 5: Solve for x
   x = 7,873.30/72.48
6. Step 6: Final answer
   x = 108.63