Finding the Fourth Proportional to 404,499.45, 558,320.28 and 234,788.25

Step by Step Solution

1. Step 1: Write the proportion equation
   404,499.45 : 558,320.28 = 234,788.25 : x
2. Step 2: Convert to fraction form
   404,499.45/558,320.28 = 234,788.25/x
3. Step 3: Cross multiply
   404,499.45x = 558,320.28 × 234,788.25
4. Step 4: Simplify right side
   404,499.45x = 131,087,041,480.71
5. Step 5: Solve for x
   x = 131,087,041,480.71/404,499.45
6. Step 6: Final answer
   x = 324,072.24