Finding the Fourth Proportional to 146.14, 217.69 and 141.89

Step by Step Solution

1. Step 1: Write the proportion equation
   146.14 : 217.69 = 141.89 : x
2. Step 2: Convert to fraction form
   146.14/217.69 = 141.89/x
3. Step 3: Cross multiply
   146.14x = 217.69 × 141.89
4. Step 4: Simplify right side
   146.14x = 30,886.59
5. Step 5: Solve for x
   x = 30,886.59/146.14
6. Step 6: Final answer
   x = 211.35