Finding the Fourth Proportional to 105,878.30, 146,112.33 and 58,134.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,878.30 : 146,112.33 = 58,134.74 : x
2. Step 2: Convert to fraction form
   105,878.30/146,112.33 = 58,134.74/x
3. Step 3: Cross multiply
   105,878.30x = 146,112.33 × 58,134.74
4. Step 4: Simplify right side
   105,878.30x = 8,494,201,584.78
5. Step 5: Solve for x
   x = 8,494,201,584.78/105,878.30
6. Step 6: Final answer
   x = 80,226.09