Finding the Fourth Proportional to 71.42, 106.96 and 67.83

Step by Step Solution

1. Step 1: Write the proportion equation
   71.42 : 106.96 = 67.83 : x
2. Step 2: Convert to fraction form
   71.42/106.96 = 67.83/x
3. Step 3: Cross multiply
   71.42x = 106.96 × 67.83
4. Step 4: Simplify right side
   71.42x = 7,255.08
5. Step 5: Solve for x
   x = 7,255.08/71.42
6. Step 6: Final answer
   x = 101.58