Finding the Fourth Proportional to 404,136.63, 606,229.24 and 123,656.31

Step by Step Solution

1. Step 1: Write the proportion equation
   404,136.63 : 606,229.24 = 123,656.31 : x
2. Step 2: Convert to fraction form
   404,136.63/606,229.24 = 123,656.31/x
3. Step 3: Cross multiply
   404,136.63x = 606,229.24 × 123,656.31
4. Step 4: Simplify right side
   404,136.63x = 74,964,067,492.22
5. Step 5: Solve for x
   x = 74,964,067,492.22/404,136.63
6. Step 6: Final answer
   x = 185,491.89