Finding the Fourth Proportional to 67.27, 100.89 and 28.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67.27 : 100.89 = 28.75 : x
2. Step 2: Convert to fraction form
   67.27/100.89 = 28.75/x
3. Step 3: Cross multiply
   67.27x = 100.89 × 28.75
4. Step 4: Simplify right side
   67.27x = 2,900.44
5. Step 5: Solve for x
   x = 2,900.44/67.27
6. Step 6: Final answer
   x = 43.12