Finding the Fourth Proportional to 253,968.69, 350,405.91 and 200,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,968.69 : 350,405.91 = 200,086.50 : x
2. Step 2: Convert to fraction form
   253,968.69/350,405.91 = 200,086.50/x
3. Step 3: Cross multiply
   253,968.69x = 350,405.91 × 200,086.50
4. Step 4: Simplify right side
   253,968.69x = 70,111,492,111.22
5. Step 5: Solve for x
   x = 70,111,492,111.22/253,968.69
6. Step 6: Final answer
   x = 276,063.53