Finding the Fourth Proportional to 103.28, 154.71 and 67.23

Step by Step Solution

1. Step 1: Write the proportion equation
   103.28 : 154.71 = 67.23 : x
2. Step 2: Convert to fraction form
   103.28/154.71 = 67.23/x
3. Step 3: Cross multiply
   103.28x = 154.71 × 67.23
4. Step 4: Simplify right side
   103.28x = 10,401.15
5. Step 5: Solve for x
   x = 10,401.15/103.28
6. Step 6: Final answer
   x = 100.71