Finding the Fourth Proportional to 105,847.43, 146,071.10 and 58,105.13

Step by Step Solution

1. Step 1: Write the proportion equation
   105,847.43 : 146,071.10 = 58,105.13 : x
2. Step 2: Convert to fraction form
   105,847.43/146,071.10 = 58,105.13/x
3. Step 3: Cross multiply
   105,847.43x = 146,071.10 × 58,105.13
4. Step 4: Simplify right side
   105,847.43x = 8,487,479,669.65
5. Step 5: Solve for x
   x = 8,487,479,669.65/105,847.43
6. Step 6: Final answer
   x = 80,185.98