Finding the Fourth Proportional to 139,629.02, 209,525.54 and 50,880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,629.02 : 209,525.54 = 50,880.56 : x
2. Step 2: Convert to fraction form
   139,629.02/209,525.54 = 50,880.56/x
3. Step 3: Cross multiply
   139,629.02x = 209,525.54 × 50,880.56
4. Step 4: Simplify right side
   139,629.02x = 10,660,775,507.47
5. Step 5: Solve for x
   x = 10,660,775,507.47/139,629.02
6. Step 6: Final answer
   x = 76,350.72