Finding the Fourth Proportional to 140.55, 194.00 and 111.57

Step by Step Solution

1. Step 1: Write the proportion equation
   140.55 : 194.00 = 111.57 : x
2. Step 2: Convert to fraction form
   140.55/194.00 = 111.57/x
3. Step 3: Cross multiply
   140.55x = 194.00 × 111.57
4. Step 4: Simplify right side
   140.55x = 21,644.02
5. Step 5: Solve for x
   x = 21,644.02/140.55
6. Step 6: Final answer
   x = 154.00