Finding the Fourth Proportional to 139,574.16, 209,417.22 and 50,833.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,574.16 : 209,417.22 = 50,833.80 : x
2. Step 2: Convert to fraction form
   139,574.16/209,417.22 = 50,833.80/x
3. Step 3: Cross multiply
   139,574.16x = 209,417.22 × 50,833.80
4. Step 4: Simplify right side
   139,574.16x = 10,645,473,078.04
5. Step 5: Solve for x
   x = 10,645,473,078.04/139,574.16
6. Step 6: Final answer
   x = 76,271.09