Finding the Fourth Proportional to 248,728,879.47, 373,012,487.69 and 82,687,815.39

Step by Step Solution

1. Step 1: Write the proportion equation
   248,728,879.47 : 373,012,487.69 = 82,687,815.39 : x
2. Step 2: Convert to fraction form
   248,728,879.47/373,012,487.69 = 82,687,815.39/x
3. Step 3: Cross multiply
   248,728,879.47x = 373,012,487.69 × 82,687,815.39
4. Step 4: Simplify right side
   248,728,879.47x = 30,843,587,721,001,180
5. Step 5: Solve for x
   x = 30,843,587,721,001,180/248,728,879.47
6. Step 6: Final answer
   x = 124,004,851.33