Finding the Fourth Proportional to 139,285.67, 209,029.96 and 50,546.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,285.67 : 209,029.96 = 50,546.33 : x
2. Step 2: Convert to fraction form
   139,285.67/209,029.96 = 50,546.33/x
3. Step 3: Cross multiply
   139,285.67x = 209,029.96 × 50,546.33
4. Step 4: Simplify right side
   139,285.67x = 10,565,696,292.90
5. Step 5: Solve for x
   x = 10,565,696,292.90/139,285.67
6. Step 6: Final answer
   x = 75,856.31