Finding the Fourth Proportional to 256,796.06, 354,375.42 and 142,083.06

Step by Step Solution

1. Step 1: Write the proportion equation
   256,796.06 : 354,375.42 = 142,083.06 : x
2. Step 2: Convert to fraction form
   256,796.06/354,375.42 = 142,083.06/x
3. Step 3: Cross multiply
   256,796.06x = 354,375.42 × 142,083.06
4. Step 4: Simplify right side
   256,796.06x = 50,350,744,062.39
5. Step 5: Solve for x
   x = 50,350,744,062.39/256,796.06
6. Step 6: Final answer
   x = 196,072.88