Finding the Fourth Proportional to 139,050.32, 208,451.78 and 50,284.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,050.32 : 208,451.78 = 50,284.10 : x
2. Step 2: Convert to fraction form
   139,050.32/208,451.78 = 50,284.10/x
3. Step 3: Cross multiply
   139,050.32x = 208,451.78 × 50,284.10
4. Step 4: Simplify right side
   139,050.32x = 10,481,810,150.70
5. Step 5: Solve for x
   x = 10,481,810,150.70/139,050.32
6. Step 6: Final answer
   x = 75,381.42