Finding the Fourth Proportional to 71,345.90, 107,019.89 and 33,909.79

Step by Step Solution

1. Step 1: Write the proportion equation
   71,345.90 : 107,019.89 = 33,909.79 : x
2. Step 2: Convert to fraction form
   71,345.90/107,019.89 = 33,909.79/x
3. Step 3: Cross multiply
   71,345.90x = 107,019.89 × 33,909.79
4. Step 4: Simplify right side
   71,345.90x = 3,629,021,995.72
5. Step 5: Solve for x
   x = 3,629,021,995.72/71,345.90
6. Step 6: Final answer
   x = 50,865.18