Finding the Fourth Proportional to 404,845.38, 606,603.38 and 138,460.56

Step by Step Solution

1. Step 1: Write the proportion equation
   404,845.38 : 606,603.38 = 138,460.56 : x
2. Step 2: Convert to fraction form
   404,845.38/606,603.38 = 138,460.56/x
3. Step 3: Cross multiply
   404,845.38x = 606,603.38 × 138,460.56
4. Step 4: Simplify right side
   404,845.38x = 83,990,643,692.69
5. Step 5: Solve for x
   x = 83,990,643,692.69/404,845.38
6. Step 6: Final answer
   x = 207,463.51