Finding the Fourth Proportional to 249,645.56, 344,426.72 and 142,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   249,645.56 : 344,426.72 = 142,139.52 : x
2. Step 2: Convert to fraction form
   249,645.56/344,426.72 = 142,139.52/x
3. Step 3: Cross multiply
   249,645.56x = 344,426.72 × 142,139.52
4. Step 4: Simplify right side
   249,645.56x = 48,956,647,945.28
5. Step 5: Solve for x
   x = 48,956,647,945.28/249,645.56
6. Step 6: Final answer
   x = 196,104.62