Finding the Fourth Proportional to 109.48, 151.15 and 72.67

Step by Step Solution

1. Step 1: Write the proportion equation
   109.48 : 151.15 = 72.67 : x
2. Step 2: Convert to fraction form
   109.48/151.15 = 72.67/x
3. Step 3: Cross multiply
   109.48x = 151.15 × 72.67
4. Step 4: Simplify right side
   109.48x = 10,983.71
5. Step 5: Solve for x
   x = 10,983.71/109.48
6. Step 6: Final answer
   x = 100.33