Finding the Fourth Proportional to 256,607.39, 354,087.25 and 141,870.54

Step by Step Solution

1. Step 1: Write the proportion equation
   256,607.39 : 354,087.25 = 141,870.54 : x
2. Step 2: Convert to fraction form
   256,607.39/354,087.25 = 141,870.54/x
3. Step 3: Cross multiply
   256,607.39x = 354,087.25 × 141,870.54
4. Step 4: Simplify right side
   256,607.39x = 50,234,548,346.03
5. Step 5: Solve for x
   x = 50,234,548,346.03/256,607.39
6. Step 6: Final answer
   x = 195,764.23