Finding the Fourth Proportional to 225.81, 338.69 and 104.00

Step by Step Solution

1. Step 1: Write the proportion equation
   225.81 : 338.69 = 104.00 : x
2. Step 2: Convert to fraction form
   225.81/338.69 = 104.00/x
3. Step 3: Cross multiply
   225.81x = 338.69 × 104.00
4. Step 4: Simplify right side
   225.81x = 35,222.33
5. Step 5: Solve for x
   x = 35,222.33/225.81
6. Step 6: Final answer
   x = 155.98