Finding the Fourth Proportional to 71,834.58, 107,451.78 and 50,485.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,834.58 : 107,451.78 = 50,485.80 : x
2. Step 2: Convert to fraction form
   71,834.58/107,451.78 = 50,485.80/x
3. Step 3: Cross multiply
   71,834.58x = 107,451.78 × 50,485.80
4. Step 4: Simplify right side
   71,834.58x = 5,424,789,074.72
5. Step 5: Solve for x
   x = 5,424,789,074.72/71,834.58
6. Step 6: Final answer
   x = 75,517.79