Finding the Fourth Proportional to 103.41, 142.56 and 70.74

Step by Step Solution

1. Step 1: Write the proportion equation
   103.41 : 142.56 = 70.74 : x
2. Step 2: Convert to fraction form
   103.41/142.56 = 70.74/x
3. Step 3: Cross multiply
   103.41x = 142.56 × 70.74
4. Step 4: Simplify right side
   103.41x = 10,084.69
5. Step 5: Solve for x
   x = 10,084.69/103.41
6. Step 6: Final answer
   x = 97.52