Finding the Fourth Proportional to 67.05, 100.59 and 28.52

Step by Step Solution

1. Step 1: Write the proportion equation
   67.05 : 100.59 = 28.52 : x
2. Step 2: Convert to fraction form
   67.05/100.59 = 28.52/x
3. Step 3: Cross multiply
   67.05x = 100.59 × 28.52
4. Step 4: Simplify right side
   67.05x = 2,868.83
5. Step 5: Solve for x
   x = 2,868.83/67.05
6. Step 6: Final answer
   x = 42.79