Finding the Fourth Proportional to 103,944.60, 143,443.89 and 56,198.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,944.60 : 143,443.89 = 56,198.28 : x
2. Step 2: Convert to fraction form
   103,944.60/143,443.89 = 56,198.28/x
3. Step 3: Cross multiply
   103,944.60x = 143,443.89 × 56,198.28
4. Step 4: Simplify right side
   103,944.60x = 8,061,299,894.51
5. Step 5: Solve for x
   x = 8,061,299,894.51/103,944.60
6. Step 6: Final answer
   x = 77,553.81