Finding the Fourth Proportional to 401,153.82, 553,843.98 and 258,162.36

Step by Step Solution

1. Step 1: Write the proportion equation
   401,153.82 : 553,843.98 = 258,162.36 : x
2. Step 2: Convert to fraction form
   401,153.82/553,843.98 = 258,162.36/x
3. Step 3: Cross multiply
   401,153.82x = 553,843.98 × 258,162.36
4. Step 4: Simplify right side
   401,153.82x = 142,981,668,948.59
5. Step 5: Solve for x
   x = 142,981,668,948.59/401,153.82
6. Step 6: Final answer
   x = 356,426.04