Finding the Fourth Proportional to 57,054.24, 78,728.79 and 31,556.57

Step by Step Solution

1. Step 1: Write the proportion equation
   57,054.24 : 78,728.79 = 31,556.57 : x
2. Step 2: Convert to fraction form
   57,054.24/78,728.79 = 31,556.57/x
3. Step 3: Cross multiply
   57,054.24x = 78,728.79 × 31,556.57
4. Step 4: Simplify right side
   57,054.24x = 2,484,410,179.01
5. Step 5: Solve for x
   x = 2,484,410,179.01/57,054.24
6. Step 6: Final answer
   x = 43,544.71