Finding the Fourth Proportional to 105,928.92, 146,181.99 and 58,185.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,928.92 : 146,181.99 = 58,185.34 : x
2. Step 2: Convert to fraction form
   105,928.92/146,181.99 = 58,185.34/x
3. Step 3: Cross multiply
   105,928.92x = 146,181.99 × 58,185.34
4. Step 4: Simplify right side
   105,928.92x = 8,505,648,424.57
5. Step 5: Solve for x
   x = 8,505,648,424.57/105,928.92
6. Step 6: Final answer
   x = 80,295.81