Finding the Fourth Proportional to 57,053.69, 78,728.03 and 31,556

Step by Step Solution

1. Step 1: Write the proportion equation
   57,053.69 : 78,728.03 = 31,556 : x
2. Step 2: Convert to fraction form
   57,053.69/78,728.03 = 31,556/x
3. Step 3: Cross multiply
   57,053.69x = 78,728.03 × 31,556
4. Step 4: Simplify right side
   57,053.69x = 2,484,341,556.90
5. Step 5: Solve for x
   x = 2,484,341,556.90/57,053.69
6. Step 6: Final answer
   x = 43,543.93