Finding the Fourth Proportional to 105,866.48, 146,087.06 and 58,118.19

Step by Step Solution

1. Step 1: Write the proportion equation
   105,866.48 : 146,087.06 = 58,118.19 : x
2. Step 2: Convert to fraction form
   105,866.48/146,087.06 = 58,118.19/x
3. Step 3: Cross multiply
   105,866.48x = 146,087.06 × 58,118.19
4. Step 4: Simplify right side
   105,866.48x = 8,490,315,219.03
5. Step 5: Solve for x
   x = 8,490,315,219.03/105,866.48
6. Step 6: Final answer
   x = 80,198.34