Finding the Fourth Proportional to 105,951.72, 146,210.55 and 58,205.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,951.72 : 146,210.55 = 58,205.16 : x
2. Step 2: Convert to fraction form
   105,951.72/146,210.55 = 58,205.16/x
3. Step 3: Cross multiply
   105,951.72x = 146,210.55 × 58,205.16
4. Step 4: Simplify right side
   105,951.72x = 8,510,208,456.44
5. Step 5: Solve for x
   x = 8,510,208,456.44/105,951.72
6. Step 6: Final answer
   x = 80,321.57