Finding the Fourth Proportional to 254,359.06, 351,019.89 and 139,648.39

Step by Step Solution

1. Step 1: Write the proportion equation
   254,359.06 : 351,019.89 = 139,648.39 : x
2. Step 2: Convert to fraction form
   254,359.06/351,019.89 = 139,648.39/x
3. Step 3: Cross multiply
   254,359.06x = 351,019.89 × 139,648.39
4. Step 4: Simplify right side
   254,359.06x = 49,019,361,618.93
5. Step 5: Solve for x
   x = 49,019,361,618.93/254,359.06
6. Step 6: Final answer
   x = 192,717.19