Finding the Fourth Proportional to 225.98, 338.72 and 104.00

Step by Step Solution

1. Step 1: Write the proportion equation
   225.98 : 338.72 = 104.00 : x
2. Step 2: Convert to fraction form
   225.98/338.72 = 104.00/x
3. Step 3: Cross multiply
   225.98x = 338.72 × 104.00
4. Step 4: Simplify right side
   225.98x = 35,225.25
5. Step 5: Solve for x
   x = 35,225.25/225.98
6. Step 6: Final answer
   x = 155.87