Finding the Fourth Proportional to 104,669.50, 144,443.20 and 56,922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,669.50 : 144,443.20 = 56,922.72 : x
2. Step 2: Convert to fraction form
   104,669.50/144,443.20 = 56,922.72/x
3. Step 3: Cross multiply
   104,669.50x = 144,443.20 × 56,922.72
4. Step 4: Simplify right side
   104,669.50x = 8,222,099,829.50
5. Step 5: Solve for x
   x = 8,222,099,829.50/104,669.50
6. Step 6: Final answer
   x = 78,552.97