Finding the Fourth Proportional to 104,426.51, 144,104.73 and 56,678.83

Step by Step Solution

1. Step 1: Write the proportion equation
   104,426.51 : 144,104.73 = 56,678.83 : x
2. Step 2: Convert to fraction form
   104,426.51/144,104.73 = 56,678.83/x
3. Step 3: Cross multiply
   104,426.51x = 144,104.73 × 56,678.83
4. Step 4: Simplify right side
   104,426.51x = 8,167,687,493.87
5. Step 5: Solve for x
   x = 8,167,687,493.87/104,426.51
6. Step 6: Final answer
   x = 78,214.69