Finding the Fourth Proportional to 253,162.50, 379,495.35 and 140,896.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,162.50 : 379,495.35 = 140,896.50 : x
2. Step 2: Convert to fraction form
   253,162.50/379,495.35 = 140,896.50/x
3. Step 3: Cross multiply
   253,162.50x = 379,495.35 × 140,896.50
4. Step 4: Simplify right side
   253,162.50x = 53,469,566,581.28
5. Step 5: Solve for x
   x = 53,469,566,581.28/253,162.50
6. Step 6: Final answer
   x = 211,206.50