Finding the Fourth Proportional to 105,854.76, 146,078.98 and 58,108.92

Step by Step Solution

1. Step 1: Write the proportion equation
   105,854.76 : 146,078.98 = 58,108.92 : x
2. Step 2: Convert to fraction form
   105,854.76/146,078.98 = 58,108.92/x
3. Step 3: Cross multiply
   105,854.76x = 146,078.98 × 58,108.92
4. Step 4: Simplify right side
   105,854.76x = 8,488,491,762.50
5. Step 5: Solve for x
   x = 8,488,491,762.50/105,854.76
6. Step 6: Final answer
   x = 80,189.99