Finding the Fourth Proportional to 143,072.18, 197,435.82 and 79,408.34

Step by Step Solution

1. Step 1: Write the proportion equation
   143,072.18 : 197,435.82 = 79,408.34 : x
2. Step 2: Convert to fraction form
   143,072.18/197,435.82 = 79,408.34/x
3. Step 3: Cross multiply
   143,072.18x = 197,435.82 × 79,408.34
4. Step 4: Simplify right side
   143,072.18x = 15,678,050,722.74
5. Step 5: Solve for x
   x = 15,678,050,722.74/143,072.18
6. Step 6: Final answer
   x = 109,581.41