Finding the Fourth Proportional to 94.05, 141.18 and 72.18

Step by Step Solution

1. Step 1: Write the proportion equation
   94.05 : 141.18 = 72.18 : x
2. Step 2: Convert to fraction form
   94.05/141.18 = 72.18/x
3. Step 3: Cross multiply
   94.05x = 141.18 × 72.18
4. Step 4: Simplify right side
   94.05x = 10,190.37
5. Step 5: Solve for x
   x = 10,190.37/94.05
6. Step 6: Final answer
   x = 108.35