Finding the Fourth Proportional to 354,118.50, 488,683.53 and 195,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,118.50 : 488,683.53 = 195,142.50 : x
2. Step 2: Convert to fraction form
   354,118.50/488,683.53 = 195,142.50/x
3. Step 3: Cross multiply
   354,118.50x = 488,683.53 × 195,142.50
4. Step 4: Simplify right side
   354,118.50x = 95,362,925,753.03
5. Step 5: Solve for x
   x = 95,362,925,753.03/354,118.50
6. Step 6: Final answer
   x = 269,296.65