Finding the Fourth Proportional to 139,574.49, 209,361.85 and 34,393.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,574.49 : 209,361.85 = 34,393.47 : x
2. Step 2: Convert to fraction form
   139,574.49/209,361.85 = 34,393.47/x
3. Step 3: Cross multiply
   139,574.49x = 209,361.85 × 34,393.47
4. Step 4: Simplify right side
   139,574.49x = 7,200,680,507.12
5. Step 5: Solve for x
   x = 7,200,680,507.12/139,574.49
6. Step 6: Final answer
   x = 51,590.23