Finding the Fourth Proportional to 67.69, 101.49 and 43.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67.69 : 101.49 = 43.78 : x
2. Step 2: Convert to fraction form
   67.69/101.49 = 43.78/x
3. Step 3: Cross multiply
   67.69x = 101.49 × 43.78
4. Step 4: Simplify right side
   67.69x = 4,443.23
5. Step 5: Solve for x
   x = 4,443.23/67.69
6. Step 6: Final answer
   x = 65.64