Finding the Fourth Proportional to 254,229.89, 350,836.28 and 139,510.47

Step by Step Solution

1. Step 1: Write the proportion equation
   254,229.89 : 350,836.28 = 139,510.47 : x
2. Step 2: Convert to fraction form
   254,229.89/350,836.28 = 139,510.47/x
3. Step 3: Cross multiply
   254,229.89x = 350,836.28 × 139,510.47
4. Step 4: Simplify right side
   254,229.89x = 48,945,333,618.30
5. Step 5: Solve for x
   x = 48,945,333,618.30/254,229.89
6. Step 6: Final answer
   x = 192,523.91