Finding the Fourth Proportional to 139,084.39, 208,626.74 and 50,317.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,084.39 : 208,626.74 = 50,317.10 : x
2. Step 2: Convert to fraction form
   139,084.39/208,626.74 = 50,317.10/x
3. Step 3: Cross multiply
   139,084.39x = 208,626.74 × 50,317.10
4. Step 4: Simplify right side
   139,084.39x = 10,497,492,215.57
5. Step 5: Solve for x
   x = 10,497,492,215.57/139,084.39
6. Step 6: Final answer
   x = 75,475.70