Finding the Fourth Proportional to 404,111.49, 606,145.23 and 123,628.74

Step by Step Solution

1. Step 1: Write the proportion equation
   404,111.49 : 606,145.23 = 123,628.74 : x
2. Step 2: Convert to fraction form
   404,111.49/606,145.23 = 123,628.74/x
3. Step 3: Cross multiply
   404,111.49x = 606,145.23 × 123,628.74
4. Step 4: Simplify right side
   404,111.49x = 74,936,971,041.91
5. Step 5: Solve for x
   x = 74,936,971,041.91/404,111.49
6. Step 6: Final answer
   x = 185,436.38