Finding the Fourth Proportional to 72.04, 108.01 and 28.67

Step by Step Solution

1. Step 1: Write the proportion equation
   72.04 : 108.01 = 28.67 : x
2. Step 2: Convert to fraction form
   72.04/108.01 = 28.67/x
3. Step 3: Cross multiply
   72.04x = 108.01 × 28.67
4. Step 4: Simplify right side
   72.04x = 3,096.65
5. Step 5: Solve for x
   x = 3,096.65/72.04
6. Step 6: Final answer
   x = 42.99