Finding the Fourth Proportional to 558,831.98, 771,166.72 and 317,100.12

Step by Step Solution

1. Step 1: Write the proportion equation
   558,831.98 : 771,166.72 = 317,100.12 : x
2. Step 2: Convert to fraction form
   558,831.98/771,166.72 = 317,100.12/x
3. Step 3: Cross multiply
   558,831.98x = 771,166.72 × 317,100.12
4. Step 4: Simplify right side
   558,831.98x = 244,537,059,452.01
5. Step 5: Solve for x
   x = 244,537,059,452.01/558,831.98
6. Step 6: Final answer
   x = 437,586.02