Finding the Fourth Proportional to 256,516.56, 354,041.55 and 169,147.89

Step by Step Solution

1. Step 1: Write the proportion equation
   256,516.56 : 354,041.55 = 169,147.89 : x
2. Step 2: Convert to fraction form
   256,516.56/354,041.55 = 169,147.89/x
3. Step 3: Cross multiply
   256,516.56x = 354,041.55 × 169,147.89
4. Step 4: Simplify right side
   256,516.56x = 59,885,381,154.83
5. Step 5: Solve for x
   x = 59,885,381,154.83/256,516.56
6. Step 6: Final answer
   x = 233,456.20