Finding the Fourth Proportional to 164,870.70, 247,014.45 and 139,793.10

Step by Step Solution

1. Step 1: Write the proportion equation
   164,870.70 : 247,014.45 = 139,793.10 : x
2. Step 2: Convert to fraction form
   164,870.70/247,014.45 = 139,793.10/x
3. Step 3: Cross multiply
   164,870.70x = 247,014.45 × 139,793.10
4. Step 4: Simplify right side
   164,870.70x = 34,530,915,710.30
5. Step 5: Solve for x
   x = 34,530,915,710.30/164,870.70
6. Step 6: Final answer
   x = 209,442.40