Finding the Fourth Proportional to 31,456.55, 47,105.93 and 18,798.51

Step by Step Solution

1. Step 1: Write the proportion equation
   31,456.55 : 47,105.93 = 18,798.51 : x
2. Step 2: Convert to fraction form
   31,456.55/47,105.93 = 18,798.51/x
3. Step 3: Cross multiply
   31,456.55x = 47,105.93 × 18,798.51
4. Step 4: Simplify right side
   31,456.55x = 885,521,296.16
5. Step 5: Solve for x
   x = 885,521,296.16/31,456.55
6. Step 6: Final answer
   x = 28,150.62