Finding the Fourth Proportional to 497,005,401.89, 685,869,526.24 and 273,982,184.03

Step by Step Solution

1. Step 1: Write the proportion equation
   497,005,401.89 : 685,869,526.24 = 273,982,184.03 : x
2. Step 2: Convert to fraction form
   497,005,401.89/685,869,526.24 = 273,982,184.03/x
3. Step 3: Cross multiply
   497,005,401.89x = 685,869,526.24 × 273,982,184.03
4. Step 4: Simplify right side
   497,005,401.89x = 187,916,030,759,886,304
5. Step 5: Solve for x
   x = 187,916,030,759,886,304/497,005,401.89
6. Step 6: Final answer
   x = 378,096,555.98