Finding the Fourth Proportional to 67.18, 100.71 and 43.06

Step by Step Solution

1. Step 1: Write the proportion equation
   67.18 : 100.71 = 43.06 : x
2. Step 2: Convert to fraction form
   67.18/100.71 = 43.06/x
3. Step 3: Cross multiply
   67.18x = 100.71 × 43.06
4. Step 4: Simplify right side
   67.18x = 4,336.57
5. Step 5: Solve for x
   x = 4,336.57/67.18
6. Step 6: Final answer
   x = 64.55