Finding the Fourth Proportional to 69,940.49, 96,517.89 and 38,109.40

Step by Step Solution

1. Step 1: Write the proportion equation
   69,940.49 : 96,517.89 = 38,109.40 : x
2. Step 2: Convert to fraction form
   69,940.49/96,517.89 = 38,109.40/x
3. Step 3: Cross multiply
   69,940.49x = 96,517.89 × 38,109.40
4. Step 4: Simplify right side
   69,940.49x = 3,678,238,635.87
5. Step 5: Solve for x
   x = 3,678,238,635.87/69,940.49
6. Step 6: Final answer
   x = 52,590.98