Finding the Fourth Proportional to 139,533.91, 209,356.85 and 50,793.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,533.91 : 209,356.85 = 50,793.55 : x
2. Step 2: Convert to fraction form
   139,533.91/209,356.85 = 50,793.55/x
3. Step 3: Cross multiply
   139,533.91x = 209,356.85 × 50,793.55
4. Step 4: Simplify right side
   139,533.91x = 10,633,977,628.32
5. Step 5: Solve for x
   x = 10,633,977,628.32/139,533.91
6. Step 6: Final answer
   x = 76,210.70