Finding the Fourth Proportional to 249,854.27, 344,817.61 and 142,426.86

Step by Step Solution

1. Step 1: Write the proportion equation
   249,854.27 : 344,817.61 = 142,426.86 : x
2. Step 2: Convert to fraction form
   249,854.27/344,817.61 = 142,426.86/x
3. Step 3: Cross multiply
   249,854.27x = 344,817.61 × 142,426.86
4. Step 4: Simplify right side
   249,854.27x = 49,111,287,815.87
5. Step 5: Solve for x
   x = 49,111,287,815.87/249,854.27
6. Step 6: Final answer
   x = 196,559.73