Finding the Fourth Proportional to 139,800.72, 209,650.05 and 51,027.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,800.72 : 209,650.05 = 51,027.96 : x
2. Step 2: Convert to fraction form
   139,800.72/209,650.05 = 51,027.96/x
3. Step 3: Cross multiply
   139,800.72x = 209,650.05 × 51,027.96
4. Step 4: Simplify right side
   139,800.72x = 10,698,014,365.40
5. Step 5: Solve for x
   x = 10,698,014,365.40/139,800.72
6. Step 6: Final answer
   x = 76,523.31