Finding the Fourth Proportional to 269,693.30, 404,637.15 and 259,973.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,693.30 : 404,637.15 = 259,973.30 : x
2. Step 2: Convert to fraction form
   269,693.30/404,637.15 = 259,973.30/x
3. Step 3: Cross multiply
   269,693.30x = 404,637.15 × 259,973.30
4. Step 4: Simplify right side
   269,693.30x = 105,194,855,188.10
5. Step 5: Solve for x
   x = 105,194,855,188.10/269,693.30
6. Step 6: Final answer
   x = 390,053.65