Finding the Fourth Proportional to 105,683.59, 145,843.33 and 57,937.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,683.59 : 145,843.33 = 57,937.27 : x
2. Step 2: Convert to fraction form
   105,683.59/145,843.33 = 57,937.27/x
3. Step 3: Cross multiply
   105,683.59x = 145,843.33 × 57,937.27
4. Step 4: Simplify right side
   105,683.59x = 8,449,764,387.91
5. Step 5: Solve for x
   x = 8,449,764,387.91/105,683.59
6. Step 6: Final answer
   x = 79,953.42