Finding the Fourth Proportional to 567,810.24, 851,715.72 and 318,667.20

Step by Step Solution

1. Step 1: Write the proportion equation
   567,810.24 : 851,715.72 = 318,667.20 : x
2. Step 2: Convert to fraction form
   567,810.24/851,715.72 = 318,667.20/x
3. Step 3: Cross multiply
   567,810.24x = 851,715.72 × 318,667.20
4. Step 4: Simplify right side
   567,810.24x = 271,413,863,688.38
5. Step 5: Solve for x
   x = 271,413,863,688.38/567,810.24
6. Step 6: Final answer
   x = 478,001.00