Finding the Fourth Proportional to 105,859.38, 146,086.56 and 58,113.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,859.38 : 146,086.56 = 58,113.12 : x
2. Step 2: Convert to fraction form
   105,859.38/146,086.56 = 58,113.12/x
3. Step 3: Cross multiply
   105,859.38x = 146,086.56 × 58,113.12
4. Step 4: Simplify right side
   105,859.38x = 8,489,545,791.67
5. Step 5: Solve for x
   x = 8,489,545,791.67/105,859.38
6. Step 6: Final answer
   x = 80,196.44