Finding the Fourth Proportional to 723,411.69, 998,306.42 and 401,113.50

Step by Step Solution

1. Step 1: Write the proportion equation
   723,411.69 : 998,306.42 = 401,113.50 : x
2. Step 2: Convert to fraction form
   723,411.69/998,306.42 = 401,113.50/x
3. Step 3: Cross multiply
   723,411.69x = 998,306.42 × 401,113.50
4. Step 4: Simplify right side
   723,411.69x = 400,434,180,193.10
5. Step 5: Solve for x
   x = 400,434,180,193.10/723,411.69
6. Step 6: Final answer
   x = 553,535.68