Finding the Fourth Proportional to 143,093.39, 197,468.69 and 79,431.03

Step by Step Solution

1. Step 1: Write the proportion equation
   143,093.39 : 197,468.69 = 79,431.03 : x
2. Step 2: Convert to fraction form
   143,093.39/197,468.69 = 79,431.03/x
3. Step 3: Cross multiply
   143,093.39x = 197,468.69 × 79,431.03
4. Step 4: Simplify right side
   143,093.39x = 15,685,141,042.30
5. Step 5: Solve for x
   x = 15,685,141,042.30/143,093.39
6. Step 6: Final answer
   x = 109,614.72