Finding the Fourth Proportional to 67.38, 100.91 and 43.02

Step by Step Solution

1. Step 1: Write the proportion equation
   67.38 : 100.91 = 43.02 : x
2. Step 2: Convert to fraction form
   67.38/100.91 = 43.02/x
3. Step 3: Cross multiply
   67.38x = 100.91 × 43.02
4. Step 4: Simplify right side
   67.38x = 4,340.93
5. Step 5: Solve for x
   x = 4,340.93/67.38
6. Step 6: Final answer
   x = 64.42