Finding the Fourth Proportional to 109.30, 150.81 and 67.28

Step by Step Solution

1. Step 1: Write the proportion equation
   109.30 : 150.81 = 67.28 : x
2. Step 2: Convert to fraction form
   109.30/150.81 = 67.28/x
3. Step 3: Cross multiply
   109.30x = 150.81 × 67.28
4. Step 4: Simplify right side
   109.30x = 10,146.50
5. Step 5: Solve for x
   x = 10,146.50/109.30
6. Step 6: Final answer
   x = 92.83