Finding the Fourth Proportional to 259,648.47, 387,181.89 and 250,397.46

Step by Step Solution

1. Step 1: Write the proportion equation
   259,648.47 : 387,181.89 = 250,397.46 : x
2. Step 2: Convert to fraction form
   259,648.47/387,181.89 = 250,397.46/x
3. Step 3: Cross multiply
   259,648.47x = 387,181.89 × 250,397.46
4. Step 4: Simplify right side
   259,648.47x = 96,949,361,814.00
5. Step 5: Solve for x
   x = 96,949,361,814.00/259,648.47
6. Step 6: Final answer
   x = 373,386.99