Finding the Fourth Proportional to 67.18, 100.56 and 57.46

Step by Step Solution

1. Step 1: Write the proportion equation
   67.18 : 100.56 = 57.46 : x
2. Step 2: Convert to fraction form
   67.18/100.56 = 57.46/x
3. Step 3: Cross multiply
   67.18x = 100.56 × 57.46
4. Step 4: Simplify right side
   67.18x = 5,778.18
5. Step 5: Solve for x
   x = 5,778.18/67.18
6. Step 6: Final answer
   x = 86.01