Finding the Fourth Proportional to 401,784.83, 554,426.41 and 238,413.18

Step by Step Solution

1. Step 1: Write the proportion equation
   401,784.83 : 554,426.41 = 238,413.18 : x
2. Step 2: Convert to fraction form
   401,784.83/554,426.41 = 238,413.18/x
3. Step 3: Cross multiply
   401,784.83x = 554,426.41 × 238,413.18
4. Step 4: Simplify right side
   401,784.83x = 132,182,559,519.89
5. Step 5: Solve for x
   x = 132,182,559,519.89/401,784.83
6. Step 6: Final answer
   x = 328,988.43