Finding the Fourth Proportional to 215.25, 296.78 and 141.59

Step by Step Solution

1. Step 1: Write the proportion equation
   215.25 : 296.78 = 141.59 : x
2. Step 2: Convert to fraction form
   215.25/296.78 = 141.59/x
3. Step 3: Cross multiply
   215.25x = 296.78 × 141.59
4. Step 4: Simplify right side
   215.25x = 42,018.89
5. Step 5: Solve for x
   x = 42,018.89/215.25
6. Step 6: Final answer
   x = 195.21