Finding the Fourth Proportional to 94.50, 141.56 and 72.81

Step by Step Solution

1. Step 1: Write the proportion equation
   94.50 : 141.56 = 72.81 : x
2. Step 2: Convert to fraction form
   94.50/141.56 = 72.81/x
3. Step 3: Cross multiply
   94.50x = 141.56 × 72.81
4. Step 4: Simplify right side
   94.50x = 10,306.62
5. Step 5: Solve for x
   x = 10,306.62/94.50
6. Step 6: Final answer
   x = 109.07