Finding the Fourth Proportional to 139,087.29, 208,538.76 and 50,329.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,087.29 : 208,538.76 = 50,329.25 : x
2. Step 2: Convert to fraction form
   139,087.29/208,538.76 = 50,329.25/x
3. Step 3: Cross multiply
   139,087.29x = 208,538.76 × 50,329.25
4. Step 4: Simplify right side
   139,087.29x = 10,495,598,344.04
5. Step 5: Solve for x
   x = 10,495,598,344.04/139,087.29
6. Step 6: Final answer
   x = 75,460.51