Finding the Fourth Proportional to 139,155.48, 208,749.78 and 44,352.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,155.48 : 208,749.78 = 44,352.78 : x
2. Step 2: Convert to fraction form
   139,155.48/208,749.78 = 44,352.78/x
3. Step 3: Cross multiply
   139,155.48x = 208,749.78 × 44,352.78
4. Step 4: Simplify right side
   139,155.48x = 9,258,633,067.39
5. Step 5: Solve for x
   x = 9,258,633,067.39/139,155.48
6. Step 6: Final answer
   x = 66,534.45