Finding the Fourth Proportional to 103.83, 143.22 and 71.02

Step by Step Solution

1. Step 1: Write the proportion equation
   103.83 : 143.22 = 71.02 : x
2. Step 2: Convert to fraction form
   103.83/143.22 = 71.02/x
3. Step 3: Cross multiply
   103.83x = 143.22 × 71.02
4. Step 4: Simplify right side
   103.83x = 10,171.48
5. Step 5: Solve for x
   x = 10,171.48/103.83
6. Step 6: Final answer
   x = 97.96