Finding the Fourth Proportional to 71.36, 106.18 and 67.52

Step by Step Solution

1. Step 1: Write the proportion equation
   71.36 : 106.18 = 67.52 : x
2. Step 2: Convert to fraction form
   71.36/106.18 = 67.52/x
3. Step 3: Cross multiply
   71.36x = 106.18 × 67.52
4. Step 4: Simplify right side
   71.36x = 7,169.27
5. Step 5: Solve for x
   x = 7,169.27/71.36
6. Step 6: Final answer
   x = 100.47