Finding the Fourth Proportional to 67.78, 101.72 and 35.29

Step by Step Solution

1. Step 1: Write the proportion equation
   67.78 : 101.72 = 35.29 : x
2. Step 2: Convert to fraction form
   67.78/101.72 = 35.29/x
3. Step 3: Cross multiply
   67.78x = 101.72 × 35.29
4. Step 4: Simplify right side
   67.78x = 3,589.70
5. Step 5: Solve for x
   x = 3,589.70/67.78
6. Step 6: Final answer
   x = 52.96