Finding the Fourth Proportional to 250,426.18, 345,520.88 and 142,974.82

Step by Step Solution

1. Step 1: Write the proportion equation
   250,426.18 : 345,520.88 = 142,974.82 : x
2. Step 2: Convert to fraction form
   250,426.18/345,520.88 = 142,974.82/x
3. Step 3: Cross multiply
   250,426.18x = 345,520.88 × 142,974.82
4. Step 4: Simplify right side
   250,426.18x = 49,400,784,045.57
5. Step 5: Solve for x
   x = 49,400,784,045.57/250,426.18
6. Step 6: Final answer
   x = 197,266.85