Finding the Fourth Proportional to 131,113.69, 196,641.25 and 51,153.78

Step by Step Solution

1. Step 1: Write the proportion equation
   131,113.69 : 196,641.25 = 51,153.78 : x
2. Step 2: Convert to fraction form
   131,113.69/196,641.25 = 51,153.78/x
3. Step 3: Cross multiply
   131,113.69x = 196,641.25 × 51,153.78
4. Step 4: Simplify right side
   131,113.69x = 10,058,943,241.43
5. Step 5: Solve for x
   x = 10,058,943,241.43/131,113.69
6. Step 6: Final answer
   x = 76,719.24