Finding the Fourth Proportional to 123,969.70, 171,078.16 and 73,668.70

Step by Step Solution

1. Step 1: Write the proportion equation
   123,969.70 : 171,078.16 = 73,668.70 : x
2. Step 2: Convert to fraction form
   123,969.70/171,078.16 = 73,668.70/x
3. Step 3: Cross multiply
   123,969.70x = 171,078.16 × 73,668.70
4. Step 4: Simplify right side
   123,969.70x = 12,603,105,645.59
5. Step 5: Solve for x
   x = 12,603,105,645.59/123,969.70
6. Step 6: Final answer
   x = 101,662.79