Finding the Fourth Proportional to 103.23, 142.42 and 73.73

Step by Step Solution

1. Step 1: Write the proportion equation
   103.23 : 142.42 = 73.73 : x
2. Step 2: Convert to fraction form
   103.23/142.42 = 73.73/x
3. Step 3: Cross multiply
   103.23x = 142.42 × 73.73
4. Step 4: Simplify right side
   103.23x = 10,499.91
5. Step 5: Solve for x
   x = 10,499.91/103.23
6. Step 6: Final answer
   x = 101.72