Finding the Fourth Proportional to 269,315.10, 404,191.35 and 260,567.10

Step by Step Solution

1. Step 1: Write the proportion equation
   269,315.10 : 404,191.35 = 260,567.10 : x
2. Step 2: Convert to fraction form
   269,315.10/404,191.35 = 260,567.10/x
3. Step 3: Cross multiply
   269,315.10x = 404,191.35 × 260,567.10
4. Step 4: Simplify right side
   269,315.10x = 105,318,967,914.59
5. Step 5: Solve for x
   x = 105,318,967,914.59/269,315.10
6. Step 6: Final answer
   x = 391,062.25