Finding the Fourth Proportional to 139,342.59, 209,014.47 and 34,161.53

Step by Step Solution

1. Step 1: Write the proportion equation
   139,342.59 : 209,014.47 = 34,161.53 : x
2. Step 2: Convert to fraction form
   139,342.59/209,014.47 = 34,161.53/x
3. Step 3: Cross multiply
   139,342.59x = 209,014.47 × 34,161.53
4. Step 4: Simplify right side
   139,342.59x = 7,140,253,042.27
5. Step 5: Solve for x
   x = 7,140,253,042.27/139,342.59
6. Step 6: Final answer
   x = 51,242.43