Finding the Fourth Proportional to 144,939.76, 199,915.69 and 140,062.75

Step by Step Solution

1. Step 1: Write the proportion equation
   144,939.76 : 199,915.69 = 140,062.75 : x
2. Step 2: Convert to fraction form
   144,939.76/199,915.69 = 140,062.75/x
3. Step 3: Cross multiply
   144,939.76x = 199,915.69 × 140,062.75
4. Step 4: Simplify right side
   144,939.76x = 28,000,741,309.55
5. Step 5: Solve for x
   x = 28,000,741,309.55/144,939.76
6. Step 6: Final answer
   x = 193,188.82