Finding the Fourth Proportional to 105,986.29, 146,259.38 and 58,238.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,986.29 : 146,259.38 = 58,238.61 : x
2. Step 2: Convert to fraction form
   105,986.29/146,259.38 = 58,238.61/x
3. Step 3: Cross multiply
   105,986.29x = 146,259.38 × 58,238.61
4. Step 4: Simplify right side
   105,986.29x = 8,517,942,990.66
5. Step 5: Solve for x
   x = 8,517,942,990.66/105,986.29
6. Step 6: Final answer
   x = 80,368.35