Finding the Fourth Proportional to 321,680.76, 443,628.78 and 200,833.08

Step by Step Solution

1. Step 1: Write the proportion equation
   321,680.76 : 443,628.78 = 200,833.08 : x
2. Step 2: Convert to fraction form
   321,680.76/443,628.78 = 200,833.08/x
3. Step 3: Cross multiply
   321,680.76x = 443,628.78 × 200,833.08
4. Step 4: Simplify right side
   321,680.76x = 89,095,334,264.04
5. Step 5: Solve for x
   x = 89,095,334,264.04/321,680.76
6. Step 6: Final answer
   x = 276,968.18