Finding the Fourth Proportional to 67.62, 101.34 and 43.20

Step by Step Solution

1. Step 1: Write the proportion equation
   67.62 : 101.34 = 43.20 : x
2. Step 2: Convert to fraction form
   67.62/101.34 = 43.20/x
3. Step 3: Cross multiply
   67.62x = 101.34 × 43.20
4. Step 4: Simplify right side
   67.62x = 4,377.89
5. Step 5: Solve for x
   x = 4,377.89/67.62
6. Step 6: Final answer
   x = 64.74