Finding the Fourth Proportional to 103.56, 142.82 and 75.92

Step by Step Solution

1. Step 1: Write the proportion equation
   103.56 : 142.82 = 75.92 : x
2. Step 2: Convert to fraction form
   103.56/142.82 = 75.92/x
3. Step 3: Cross multiply
   103.56x = 142.82 × 75.92
4. Step 4: Simplify right side
   103.56x = 10,842.89
5. Step 5: Solve for x
   x = 10,842.89/103.56
6. Step 6: Final answer
   x = 104.70