Finding the Fourth Proportional to 139,375.38, 209,088.26 and 50,753.28

Step by Step Solution

1. Step 1: Write the proportion equation
   139,375.38 : 209,088.26 = 50,753.28 : x
2. Step 2: Convert to fraction form
   139,375.38/209,088.26 = 50,753.28/x
3. Step 3: Cross multiply
   139,375.38x = 209,088.26 × 50,753.28
4. Step 4: Simplify right side
   139,375.38x = 10,611,915,004.49
5. Step 5: Solve for x
   x = 10,611,915,004.49/139,375.38
6. Step 6: Final answer
   x = 76,139.09