Finding the Fourth Proportional to 109.27, 150.81 and 78.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109.27 : 150.81 = 78.25 : x
2. Step 2: Convert to fraction form
   109.27/150.81 = 78.25/x
3. Step 3: Cross multiply
   109.27x = 150.81 × 78.25
4. Step 4: Simplify right side
   109.27x = 11,800.88
5. Step 5: Solve for x
   x = 11,800.88/109.27
6. Step 6: Final answer
   x = 108.00