Finding the Fourth Proportional to 256,293.78, 353,684.00 and 141,580.31

Step by Step Solution

1. Step 1: Write the proportion equation
   256,293.78 : 353,684.00 = 141,580.31 : x
2. Step 2: Convert to fraction form
   256,293.78/353,684.00 = 141,580.31/x
3. Step 3: Cross multiply
   256,293.78x = 353,684.00 × 141,580.31
4. Step 4: Simplify right side
   256,293.78x = 50,074,687,885.72
5. Step 5: Solve for x
   x = 50,074,687,885.72/256,293.78
6. Step 6: Final answer
   x = 195,380.04