Finding the Fourth Proportional to 724,047.69, 999,192.69 and 401,787.78

Step by Step Solution

1. Step 1: Write the proportion equation
   724,047.69 : 999,192.69 = 401,787.78 : x
2. Step 2: Convert to fraction form
   724,047.69/999,192.69 = 401,787.78/x
3. Step 3: Cross multiply
   724,047.69x = 999,192.69 × 401,787.78
4. Step 4: Simplify right side
   724,047.69x = 401,463,412,707.33
5. Step 5: Solve for x
   x = 401,463,412,707.33/724,047.69
6. Step 6: Final answer
   x = 554,470.95