Finding the Fourth Proportional to 256,288.50, 353,676.72 and 141,575.03

Step by Step Solution

1. Step 1: Write the proportion equation
   256,288.50 : 353,676.72 = 141,575.03 : x
2. Step 2: Convert to fraction form
   256,288.50/353,676.72 = 141,575.03/x
3. Step 3: Cross multiply
   256,288.50x = 353,676.72 × 141,575.03
4. Step 4: Simplify right side
   256,288.50x = 50,071,792,995.77
5. Step 5: Solve for x
   x = 50,071,792,995.77/256,288.50
6. Step 6: Final answer
   x = 195,372.77