Finding the Fourth Proportional to 585,468.72, 807,946.20 and 317,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   585,468.72 : 807,946.20 = 317,196.72 : x
2. Step 2: Convert to fraction form
   585,468.72/807,946.20 = 317,196.72/x
3. Step 3: Cross multiply
   585,468.72x = 807,946.20 × 317,196.72
4. Step 4: Simplify right side
   585,468.72x = 256,277,884,576.46
5. Step 5: Solve for x
   x = 256,277,884,576.46/585,468.72
6. Step 6: Final answer
   x = 437,731.13