Finding the Fourth Proportional to 847,417.55, 1,271,128.37 and 207,724.15

Step by Step Solution

1. Step 1: Write the proportion equation
   847,417.55 : 1,271,128.37 = 207,724.15 : x
2. Step 2: Convert to fraction form
   847,417.55/1,271,128.37 = 207,724.15/x
3. Step 3: Cross multiply
   847,417.55x = 1,271,128.37 × 207,724.15
4. Step 4: Simplify right side
   847,417.55x = 264,044,054,183.55
5. Step 5: Solve for x
   x = 264,044,054,183.55/847,417.55
6. Step 6: Final answer
   x = 311,586.72