Finding the Fourth Proportional to 269,681.94, 403,892.73 and 213,142.73

Step by Step Solution

1. Step 1: Write the proportion equation
   269,681.94 : 403,892.73 = 213,142.73 : x
2. Step 2: Convert to fraction form
   269,681.94/403,892.73 = 213,142.73/x
3. Step 3: Cross multiply
   269,681.94x = 403,892.73 × 213,142.73
4. Step 4: Simplify right side
   269,681.94x = 86,086,797,079.89
5. Step 5: Solve for x
   x = 86,086,797,079.89/269,681.94
6. Step 6: Final answer
   x = 319,216.03