Finding the Fourth Proportional to 140,002.50, 209,938.06 and 51,193.90

Step by Step Solution

1. Step 1: Write the proportion equation
   140,002.50 : 209,938.06 = 51,193.90 : x
2. Step 2: Convert to fraction form
   140,002.50/209,938.06 = 51,193.90/x
3. Step 3: Cross multiply
   140,002.50x = 209,938.06 × 51,193.90
4. Step 4: Simplify right side
   140,002.50x = 10,747,548,049.83
5. Step 5: Solve for x
   x = 10,747,548,049.83/140,002.50
6. Step 6: Final answer
   x = 76,766.83