Finding the Fourth Proportional to 95.50, 142.98 and 72.61

Step by Step Solution

1. Step 1: Write the proportion equation
   95.50 : 142.98 = 72.61 : x
2. Step 2: Convert to fraction form
   95.50/142.98 = 72.61/x
3. Step 3: Cross multiply
   95.50x = 142.98 × 72.61
4. Step 4: Simplify right side
   95.50x = 10,381.78
5. Step 5: Solve for x
   x = 10,381.78/95.50
6. Step 6: Final answer
   x = 108.71