Finding the Fourth Proportional to 354,144, 488,718.72 and 195,168

Step by Step Solution

1. Step 1: Write the proportion equation
   354,144 : 488,718.72 = 195,168 : x
2. Step 2: Convert to fraction form
   354,144/488,718.72 = 195,168/x
3. Step 3: Cross multiply
   354,144x = 488,718.72 × 195,168
4. Step 4: Simplify right side
   354,144x = 95,382,255,144.96
5. Step 5: Solve for x
   x = 95,382,255,144.96/354,144
6. Step 6: Final answer
   x = 269,331.84