Finding the Fourth Proportional to 233.25, 321.89 and 140.00

Step by Step Solution

1. Step 1: Write the proportion equation
   233.25 : 321.89 = 140.00 : x
2. Step 2: Convert to fraction form
   233.25/321.89 = 140.00/x
3. Step 3: Cross multiply
   233.25x = 321.89 × 140.00
4. Step 4: Simplify right side
   233.25x = 45,063.34
5. Step 5: Solve for x
   x = 45,063.34/233.25
6. Step 6: Final answer
   x = 193.20