Finding the Fourth Proportional to 140,147.69, 210,096.49 and 51,380.46

Step by Step Solution

1. Step 1: Write the proportion equation
   140,147.69 : 210,096.49 = 51,380.46 : x
2. Step 2: Convert to fraction form
   140,147.69/210,096.49 = 51,380.46/x
3. Step 3: Cross multiply
   140,147.69x = 210,096.49 × 51,380.46
4. Step 4: Simplify right side
   140,147.69x = 10,794,854,300.59
5. Step 5: Solve for x
   x = 10,794,854,300.59/140,147.69
6. Step 6: Final answer
   x = 77,024.85