Finding the Fourth Proportional to 103.82, 142.54 and 94.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103.82 : 142.54 = 94.10 : x
2. Step 2: Convert to fraction form
   103.82/142.54 = 94.10/x
3. Step 3: Cross multiply
   103.82x = 142.54 × 94.10
4. Step 4: Simplify right side
   103.82x = 13,413.01
5. Step 5: Solve for x
   x = 13,413.01/103.82
6. Step 6: Final answer
   x = 129.19