Finding the Fourth Proportional to 109.08, 150.56 and 72.27

Step by Step Solution

1. Step 1: Write the proportion equation
   109.08 : 150.56 = 72.27 : x
2. Step 2: Convert to fraction form
   109.08/150.56 = 72.27/x
3. Step 3: Cross multiply
   109.08x = 150.56 × 72.27
4. Step 4: Simplify right side
   109.08x = 10,880.61
5. Step 5: Solve for x
   x = 10,880.61/109.08
6. Step 6: Final answer
   x = 99.75