Finding the Fourth Proportional to 404,100.99, 606,129.50 and 123,618.24

Step by Step Solution

1. Step 1: Write the proportion equation
   404,100.99 : 606,129.50 = 123,618.24 : x
2. Step 2: Convert to fraction form
   404,100.99/606,129.50 = 123,618.24/x
3. Step 3: Cross multiply
   404,100.99x = 606,129.50 × 123,618.24
4. Step 4: Simplify right side
   404,100.99x = 74,928,661,383.99
5. Step 5: Solve for x
   x = 74,928,661,383.99/404,100.99
6. Step 6: Final answer
   x = 185,420.63