Finding the Fourth Proportional to 81,039.06, 111,769.61 and 49,207.28

Step by Step Solution

1. Step 1: Write the proportion equation
   81,039.06 : 111,769.61 = 49,207.28 : x
2. Step 2: Convert to fraction form
   81,039.06/111,769.61 = 49,207.28/x
3. Step 3: Cross multiply
   81,039.06x = 111,769.61 × 49,207.28
4. Step 4: Simplify right side
   81,039.06x = 5,499,877,689.88
5. Step 5: Solve for x
   x = 5,499,877,689.88/81,039.06
6. Step 6: Final answer
   x = 67,867.00