Finding the Fourth Proportional to 256,443.56, 353,873.58 and 141,720.83

Step by Step Solution

1. Step 1: Write the proportion equation
   256,443.56 : 353,873.58 = 141,720.83 : x
2. Step 2: Convert to fraction form
   256,443.56/353,873.58 = 141,720.83/x
3. Step 3: Cross multiply
   256,443.56x = 353,873.58 × 141,720.83
4. Step 4: Simplify right side
   256,443.56x = 50,151,257,472.67
5. Step 5: Solve for x
   x = 50,151,257,472.67/256,443.56
6. Step 6: Final answer
   x = 195,564.50