Finding the Fourth Proportional to 67.10, 100.69 and 28.62

Step by Step Solution

1. Step 1: Write the proportion equation
   67.10 : 100.69 = 28.62 : x
2. Step 2: Convert to fraction form
   67.10/100.69 = 28.62/x
3. Step 3: Cross multiply
   67.10x = 100.69 × 28.62
4. Step 4: Simplify right side
   67.10x = 2,881.68
5. Step 5: Solve for x
   x = 2,881.68/67.10
6. Step 6: Final answer
   x = 42.95