Finding the Fourth Proportional to 123,969.48, 171,078.12 and 67,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,969.48 : 171,078.12 = 67,380.72 : x
2. Step 2: Convert to fraction form
   123,969.48/171,078.12 = 67,380.72/x
3. Step 3: Cross multiply
   123,969.48x = 171,078.12 × 67,380.72
4. Step 4: Simplify right side
   123,969.48x = 11,527,366,901.85
5. Step 5: Solve for x
   x = 11,527,366,901.85/123,969.48
6. Step 6: Final answer
   x = 92,985.52