Finding the Fourth Proportional to 103,944.72, 143,443.71 and 56,198.06

Step by Step Solution

1. Step 1: Write the proportion equation
   103,944.72 : 143,443.71 = 56,198.06 : x
2. Step 2: Convert to fraction form
   103,944.72/143,443.71 = 56,198.06/x
3. Step 3: Cross multiply
   103,944.72x = 143,443.71 × 56,198.06
4. Step 4: Simplify right side
   103,944.72x = 8,061,257,503.98
5. Step 5: Solve for x
   x = 8,061,257,503.98/103,944.72
6. Step 6: Final answer
   x = 77,553.31