Finding the Fourth Proportional to 105,949.74, 146,210.76 and 58,206.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105,949.74 : 146,210.76 = 58,206.18 : x
2. Step 2: Convert to fraction form
   105,949.74/146,210.76 = 58,206.18/x
3. Step 3: Cross multiply
   105,949.74x = 146,210.76 × 58,206.18
4. Step 4: Simplify right side
   105,949.74x = 8,510,369,814.50
5. Step 5: Solve for x
   x = 8,510,369,814.50/105,949.74
6. Step 6: Final answer
   x = 80,324.59