Finding the Fourth Proportional to 102.83, 141.86 and 71.73

Step by Step Solution

1. Step 1: Write the proportion equation
   102.83 : 141.86 = 71.73 : x
2. Step 2: Convert to fraction form
   102.83/141.86 = 71.73/x
3. Step 3: Cross multiply
   102.83x = 141.86 × 71.73
4. Step 4: Simplify right side
   102.83x = 10,175.80
5. Step 5: Solve for x
   x = 10,175.80/102.83
6. Step 6: Final answer
   x = 98.96