Finding the Fourth Proportional to 139,633.07, 209,456.52 and 39,807.97

Step by Step Solution

1. Step 1: Write the proportion equation
   139,633.07 : 209,456.52 = 39,807.97 : x
2. Step 2: Convert to fraction form
   139,633.07/209,456.52 = 39,807.97/x
3. Step 3: Cross multiply
   139,633.07x = 209,456.52 × 39,807.97
4. Step 4: Simplify right side
   139,633.07x = 8,338,038,864.46
5. Step 5: Solve for x
   x = 8,338,038,864.46/139,633.07
6. Step 6: Final answer
   x = 59,713.93