Finding the Fourth Proportional to 269,815.50, 404,742.87 and 103,603.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,815.50 : 404,742.87 = 103,603.50 : x
2. Step 2: Convert to fraction form
   269,815.50/404,742.87 = 103,603.50/x
3. Step 3: Cross multiply
   269,815.50x = 404,742.87 × 103,603.50
4. Step 4: Simplify right side
   269,815.50x = 41,932,777,932.05
5. Step 5: Solve for x
   x = 41,932,777,932.05/269,815.50
6. Step 6: Final answer
   x = 155,412.78