Finding the Fourth Proportional to 354,808.69, 489,636.43 and 227,484.32

Step by Step Solution

1. Step 1: Write the proportion equation
   354,808.69 : 489,636.43 = 227,484.32 : x
2. Step 2: Convert to fraction form
   354,808.69/489,636.43 = 227,484.32/x
3. Step 3: Cross multiply
   354,808.69x = 489,636.43 × 227,484.32
4. Step 4: Simplify right side
   354,808.69x = 111,384,607,308.89
5. Step 5: Solve for x
   x = 111,384,607,308.89/354,808.69
6. Step 6: Final answer
   x = 313,928.64