Finding the Fourth Proportional to 256,768.71, 354,334.22 and 142,051.67

Step by Step Solution

1. Step 1: Write the proportion equation
   256,768.71 : 354,334.22 = 142,051.67 : x
2. Step 2: Convert to fraction form
   256,768.71/354,334.22 = 142,051.67/x
3. Step 3: Cross multiply
   256,768.71x = 354,334.22 × 142,051.67
4. Step 4: Simplify right side
   256,768.71x = 50,333,766,978.89
5. Step 5: Solve for x
   x = 50,333,766,978.89/256,768.71
6. Step 6: Final answer
   x = 196,027.65