Finding the Fourth Proportional to 487,144.72, 731,379.72 and 274,062.58

Step by Step Solution

1. Step 1: Write the proportion equation
   487,144.72 : 731,379.72 = 274,062.58 : x
2. Step 2: Convert to fraction form
   487,144.72/731,379.72 = 274,062.58/x
3. Step 3: Cross multiply
   487,144.72x = 731,379.72 × 274,062.58
4. Step 4: Simplify right side
   487,144.72x = 200,443,812,222.16
5. Step 5: Solve for x
   x = 200,443,812,222.16/487,144.72
6. Step 6: Final answer
   x = 411,466.66