Finding the Fourth Proportional to 140,064.12, 209,997.78 and 51,306.12

Step by Step Solution

1. Step 1: Write the proportion equation
   140,064.12 : 209,997.78 = 51,306.12 : x
2. Step 2: Convert to fraction form
   140,064.12/209,997.78 = 51,306.12/x
3. Step 3: Cross multiply
   140,064.12x = 209,997.78 × 51,306.12
4. Step 4: Simplify right side
   140,064.12x = 10,774,171,300.41
5. Step 5: Solve for x
   x = 10,774,171,300.41/140,064.12
6. Step 6: Final answer
   x = 76,923.14