Finding the Fourth Proportional to 67.72, 101.37 and 65.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67.72 : 101.37 = 65.89 : x
2. Step 2: Convert to fraction form
   67.72/101.37 = 65.89/x
3. Step 3: Cross multiply
   67.72x = 101.37 × 65.89
4. Step 4: Simplify right side
   67.72x = 6,679.27
5. Step 5: Solve for x
   x = 6,679.27/67.72
6. Step 6: Final answer
   x = 98.63