Finding the Fourth Proportional to 139,284.25, 209,009.40 and 50,544.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,284.25 : 209,009.40 = 50,544.68 : x
2. Step 2: Convert to fraction form
   139,284.25/209,009.40 = 50,544.68/x
3. Step 3: Cross multiply
   139,284.25x = 209,009.40 × 50,544.68
4. Step 4: Simplify right side
   139,284.25x = 10,564,312,987.27
5. Step 5: Solve for x
   x = 10,564,312,987.27/139,284.25
6. Step 6: Final answer
   x = 75,847.15