Finding the Fourth Proportional to 388,951, 582,648.29 and 309,123.68

Step by Step Solution

1. Step 1: Write the proportion equation
   388,951 : 582,648.29 = 309,123.68 : x
2. Step 2: Convert to fraction form
   388,951/582,648.29 = 309,123.68/x
3. Step 3: Cross multiply
   388,951x = 582,648.29 × 309,123.68
4. Step 4: Simplify right side
   388,951x = 180,110,383,550.51
5. Step 5: Solve for x
   x = 180,110,383,550.51/388,951
6. Step 6: Final answer
   x = 463,067.03