Finding the Fourth Proportional to 105,912.20, 146,253.77 and 79,008.00

Step by Step Solution

1. Step 1: Write the proportion equation
   105,912.20 : 146,253.77 = 79,008.00 : x
2. Step 2: Convert to fraction form
   105,912.20/146,253.77 = 79,008.00/x
3. Step 3: Cross multiply
   105,912.20x = 146,253.77 × 79,008.00
4. Step 4: Simplify right side
   105,912.20x = 11,555,216,916.67
5. Step 5: Solve for x
   x = 11,555,216,916.67/105,912.20
6. Step 6: Final answer
   x = 109,101.85