Finding the Fourth Proportional to 139,190.73, 208,786.05 and 50,444.07

Step by Step Solution

1. Step 1: Write the proportion equation
   139,190.73 : 208,786.05 = 50,444.07 : x
2. Step 2: Convert to fraction form
   139,190.73/208,786.05 = 50,444.07/x
3. Step 3: Cross multiply
   139,190.73x = 208,786.05 × 50,444.07
4. Step 4: Simplify right side
   139,190.73x = 10,532,018,121.22
5. Step 5: Solve for x
   x = 10,532,018,121.22/139,190.73
6. Step 6: Final answer
   x = 75,666.09