Finding the Fourth Proportional to 103.82, 143.33 and 93.42

Step by Step Solution

1. Step 1: Write the proportion equation
   103.82 : 143.33 = 93.42 : x
2. Step 2: Convert to fraction form
   103.82/143.33 = 93.42/x
3. Step 3: Cross multiply
   103.82x = 143.33 × 93.42
4. Step 4: Simplify right side
   103.82x = 13,389.42
5. Step 5: Solve for x
   x = 13,389.42/103.82
6. Step 6: Final answer
   x = 128.97