Finding the Fourth Proportional to 139,575.49, 209,363.35 and 34,394.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,575.49 : 209,363.35 = 34,394.47 : x
2. Step 2: Convert to fraction form
   139,575.49/209,363.35 = 34,394.47/x
3. Step 3: Cross multiply
   139,575.49x = 209,363.35 × 34,394.47
4. Step 4: Simplify right side
   139,575.49x = 7,200,941,460.67
5. Step 5: Solve for x
   x = 7,200,941,460.67/139,575.49
6. Step 6: Final answer
   x = 51,591.73