Finding the Fourth Proportional to 105,871.29, 146,100.57 and 58,124.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,871.29 : 146,100.57 = 58,124.31 : x
2. Step 2: Convert to fraction form
   105,871.29/146,100.57 = 58,124.31/x
3. Step 3: Cross multiply
   105,871.29x = 146,100.57 × 58,124.31
4. Step 4: Simplify right side
   105,871.29x = 8,491,994,821.86
5. Step 5: Solve for x
   x = 8,491,994,821.86/105,871.29
6. Step 6: Final answer
   x = 80,210.55