Finding the Fourth Proportional to 71,490.34, 107,165.78 and 34,040.35

Step by Step Solution

1. Step 1: Write the proportion equation
   71,490.34 : 107,165.78 = 34,040.35 : x
2. Step 2: Convert to fraction form
   71,490.34/107,165.78 = 34,040.35/x
3. Step 3: Cross multiply
   71,490.34x = 107,165.78 × 34,040.35
4. Step 4: Simplify right side
   71,490.34x = 3,647,960,744.32
5. Step 5: Solve for x
   x = 3,647,960,744.32/71,490.34
6. Step 6: Final answer
   x = 51,027.32