Finding the Fourth Proportional to 256,743.83, 354,279.22 and 142,004.25

Step by Step Solution

1. Step 1: Write the proportion equation
   256,743.83 : 354,279.22 = 142,004.25 : x
2. Step 2: Convert to fraction form
   256,743.83/354,279.22 = 142,004.25/x
3. Step 3: Cross multiply
   256,743.83x = 354,279.22 × 142,004.25
4. Step 4: Simplify right side
   256,743.83x = 50,309,154,571.67
5. Step 5: Solve for x
   x = 50,309,154,571.67/256,743.83
6. Step 6: Final answer
   x = 195,950.78