Finding the Fourth Proportional to 104,535.91, 144,259.68 and 56,789.29

Step by Step Solution

1. Step 1: Write the proportion equation
   104,535.91 : 144,259.68 = 56,789.29 : x
2. Step 2: Convert to fraction form
   104,535.91/144,259.68 = 56,789.29/x
3. Step 3: Cross multiply
   104,535.91x = 144,259.68 × 56,789.29
4. Step 4: Simplify right side
   104,535.91x = 8,192,404,802.83
5. Step 5: Solve for x
   x = 8,192,404,802.83/104,535.91
6. Step 6: Final answer
   x = 78,369.29