Finding the Fourth Proportional to 105,846.38, 146,067.45 and 58,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,846.38 : 146,067.45 = 58,100.54 : x
2. Step 2: Convert to fraction form
   105,846.38/146,067.45 = 58,100.54/x
3. Step 3: Cross multiply
   105,846.38x = 146,067.45 × 58,100.54
4. Step 4: Simplify right side
   105,846.38x = 8,486,597,721.42
5. Step 5: Solve for x
   x = 8,486,597,721.42/105,846.38
6. Step 6: Final answer
   x = 80,178.44