Finding the Fourth Proportional to 139,289, 209,016.52 and 50,549.44

Step by Step Solution

1. Step 1: Write the proportion equation
   139,289 : 209,016.52 = 50,549.44 : x
2. Step 2: Convert to fraction form
   139,289/209,016.52 = 50,549.44/x
3. Step 3: Cross multiply
   139,289x = 209,016.52 × 50,549.44
4. Step 4: Simplify right side
   139,289x = 10,565,668,036.75
5. Step 5: Solve for x
   x = 10,565,668,036.75/139,289
6. Step 6: Final answer
   x = 75,854.29