Finding the Fourth Proportional to 105,939.21, 146,160.42 and 59,992.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,939.21 : 146,160.42 = 59,992.56 : x
2. Step 2: Convert to fraction form
   105,939.21/146,160.42 = 59,992.56/x
3. Step 3: Cross multiply
   105,939.21x = 146,160.42 × 59,992.56
4. Step 4: Simplify right side
   105,939.21x = 8,768,537,766.48
5. Step 5: Solve for x
   x = 8,768,537,766.48/105,939.21
6. Step 6: Final answer
   x = 82,769.52