Finding the Fourth Proportional to 139,250.31, 208,810.67 and 50,500.23

Step by Step Solution

1. Step 1: Write the proportion equation
   139,250.31 : 208,810.67 = 50,500.23 : x
2. Step 2: Convert to fraction form
   139,250.31/208,810.67 = 50,500.23/x
3. Step 3: Cross multiply
   139,250.31x = 208,810.67 × 50,500.23
4. Step 4: Simplify right side
   139,250.31x = 10,544,986,608.95
5. Step 5: Solve for x
   x = 10,544,986,608.95/139,250.31
6. Step 6: Final answer
   x = 75,726.84