Finding the Fourth Proportional to 139,671.98, 209,378.37 and 63,713.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,671.98 : 209,378.37 = 63,713.42 : x
2. Step 2: Convert to fraction form
   139,671.98/209,378.37 = 63,713.42/x
3. Step 3: Cross multiply
   139,671.98x = 209,378.37 × 63,713.42
4. Step 4: Simplify right side
   139,671.98x = 13,340,212,026.73
5. Step 5: Solve for x
   x = 13,340,212,026.73/139,671.98
6. Step 6: Final answer
   x = 95,511.01