Finding the Fourth Proportional to 105,815.48, 146,020.56 and 58,067.87

Step by Step Solution

1. Step 1: Write the proportion equation
   105,815.48 : 146,020.56 = 58,067.87 : x
2. Step 2: Convert to fraction form
   105,815.48/146,020.56 = 58,067.87/x
3. Step 3: Cross multiply
   105,815.48x = 146,020.56 × 58,067.87
4. Step 4: Simplify right side
   105,815.48x = 8,479,102,895.41
5. Step 5: Solve for x
   x = 8,479,102,895.41/105,815.48
6. Step 6: Final answer
   x = 80,131.03