Finding the Fourth Proportional to 139,426.62, 209,108.52 and 39,584.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,426.62 : 209,108.52 = 39,584.76 : x
2. Step 2: Convert to fraction form
   139,426.62/209,108.52 = 39,584.76/x
3. Step 3: Cross multiply
   139,426.62x = 209,108.52 × 39,584.76
4. Step 4: Simplify right side
   139,426.62x = 8,277,510,578.16
5. Step 5: Solve for x
   x = 8,277,510,578.16/139,426.62
6. Step 6: Final answer
   x = 59,368.22