Finding the Fourth Proportional to 404,412.42, 607,143.51 and 310,983.78

Step by Step Solution

1. Step 1: Write the proportion equation
   404,412.42 : 607,143.51 = 310,983.78 : x
2. Step 2: Convert to fraction form
   404,412.42/607,143.51 = 310,983.78/x
3. Step 3: Cross multiply
   404,412.42x = 607,143.51 × 310,983.78
4. Step 4: Simplify right side
   404,412.42x = 188,811,783,742.27
5. Step 5: Solve for x
   x = 188,811,783,742.27/404,412.42
6. Step 6: Final answer
   x = 466,879.29