Finding the Fourth Proportional to 139,089.57, 208,634.13 and 50,322.26

Step by Step Solution

1. Step 1: Write the proportion equation
   139,089.57 : 208,634.13 = 50,322.26 : x
2. Step 2: Convert to fraction form
   139,089.57/208,634.13 = 50,322.26/x
3. Step 3: Cross multiply
   139,089.57x = 208,634.13 × 50,322.26
4. Step 4: Simplify right side
   139,089.57x = 10,498,939,891.56
5. Step 5: Solve for x
   x = 10,498,939,891.56/139,089.57
6. Step 6: Final answer
   x = 75,483.30