Finding the Fourth Proportional to 139,800.98, 209,650.43 and 51,028.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,800.98 : 209,650.43 = 51,028.22 : x
2. Step 2: Convert to fraction form
   139,800.98/209,650.43 = 51,028.22/x
3. Step 3: Cross multiply
   139,800.98x = 209,650.43 × 51,028.22
4. Step 4: Simplify right side
   139,800.98x = 10,698,088,916.83
5. Step 5: Solve for x
   x = 10,698,088,916.83/139,800.98
6. Step 6: Final answer
   x = 76,523.70