Finding the Fourth Proportional to 105,957.98, 146,224.59 and 58,214.42

Step by Step Solution

1. Step 1: Write the proportion equation
   105,957.98 : 146,224.59 = 58,214.42 : x
2. Step 2: Convert to fraction form
   105,957.98/146,224.59 = 58,214.42/x
3. Step 3: Cross multiply
   105,957.98x = 146,224.59 × 58,214.42
4. Step 4: Simplify right side
   105,957.98x = 8,512,379,696.59
5. Step 5: Solve for x
   x = 8,512,379,696.59/105,957.98
6. Step 6: Final answer
   x = 80,337.32