Finding the Fourth Proportional to 105,807.92, 146,016.72 and 58,065.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,807.92 : 146,016.72 = 58,065.71 : x
2. Step 2: Convert to fraction form
   105,807.92/146,016.72 = 58,065.71/x
3. Step 3: Cross multiply
   105,807.92x = 146,016.72 × 58,065.71
4. Step 4: Simplify right side
   105,807.92x = 8,478,563,788.59
5. Step 5: Solve for x
   x = 8,478,563,788.59/105,807.92
6. Step 6: Final answer
   x = 80,131.66