Finding the Fourth Proportional to 105,805.92, 146,007.48 and 58,058.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,805.92 : 146,007.48 = 58,058.34 : x
2. Step 2: Convert to fraction form
   105,805.92/146,007.48 = 58,058.34/x
3. Step 3: Cross multiply
   105,805.92x = 146,007.48 × 58,058.34
4. Step 4: Simplify right side
   105,805.92x = 8,476,951,916.38
5. Step 5: Solve for x
   x = 8,476,951,916.38/105,805.92
6. Step 6: Final answer
   x = 80,117.94