Finding the Fourth Proportional to 71.82, 107.51 and 67.55

Step by Step Solution

1. Step 1: Write the proportion equation
   71.82 : 107.51 = 67.55 : x
2. Step 2: Convert to fraction form
   71.82/107.51 = 67.55/x
3. Step 3: Cross multiply
   71.82x = 107.51 × 67.55
4. Step 4: Simplify right side
   71.82x = 7,261.43
5. Step 5: Solve for x
   x = 7,261.43/71.82
6. Step 6: Final answer
   x = 101.11