Finding the Fourth Proportional to 139,126.04, 208,721.46 and 45,626.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,126.04 : 208,721.46 = 45,626.12 : x
2. Step 2: Convert to fraction form
   139,126.04/208,721.46 = 45,626.12/x
3. Step 3: Cross multiply
   139,126.04x = 208,721.46 × 45,626.12
4. Step 4: Simplify right side
   139,126.04x = 9,523,150,380.54
5. Step 5: Solve for x
   x = 9,523,150,380.54/139,126.04
6. Step 6: Final answer
   x = 68,449.81