Finding the Fourth Proportional to 140,149.92, 210,099.86 and 51,382.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,149.92 : 210,099.86 = 51,382.72 : x
2. Step 2: Convert to fraction form
   140,149.92/210,099.86 = 51,382.72/x
3. Step 3: Cross multiply
   140,149.92x = 210,099.86 × 51,382.72
4. Step 4: Simplify right side
   140,149.92x = 10,795,502,278.42
5. Step 5: Solve for x
   x = 10,795,502,278.42/140,149.92
6. Step 6: Final answer
   x = 77,028.24