Finding the Fourth Proportional to 77,140.89, 115,757.31 and 34,443

Step by Step Solution

1. Step 1: Write the proportion equation
   77,140.89 : 115,757.31 = 34,443 : x
2. Step 2: Convert to fraction form
   77,140.89/115,757.31 = 34,443/x
3. Step 3: Cross multiply
   77,140.89x = 115,757.31 × 34,443
4. Step 4: Simplify right side
   77,140.89x = 3,987,029,028.33
5. Step 5: Solve for x
   x = 3,987,029,028.33/77,140.89
6. Step 6: Final answer
   x = 51,685.03