Finding the Fourth Proportional to 139,026.80, 208,556.42 and 50,322.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,026.80 : 208,556.42 = 50,322.08 : x
2. Step 2: Convert to fraction form
   139,026.80/208,556.42 = 50,322.08/x
3. Step 3: Cross multiply
   139,026.80x = 208,556.42 × 50,322.08
4. Step 4: Simplify right side
   139,026.80x = 10,494,993,121.53
5. Step 5: Solve for x
   x = 10,494,993,121.53/139,026.80
6. Step 6: Final answer
   x = 75,488.99