Finding the Fourth Proportional to 256,441.94, 353,871.33 and 141,719.21

Step by Step Solution

1. Step 1: Write the proportion equation
   256,441.94 : 353,871.33 = 141,719.21 : x
2. Step 2: Convert to fraction form
   256,441.94/353,871.33 = 141,719.21/x
3. Step 3: Cross multiply
   256,441.94x = 353,871.33 × 141,719.21
4. Step 4: Simplify right side
   256,441.94x = 50,150,363,559.89
5. Step 5: Solve for x
   x = 50,150,363,559.89/256,441.94
6. Step 6: Final answer
   x = 195,562.26