Finding the Fourth Proportional to 31,127.37, 42,904.56 and 22,055.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,127.37 : 42,904.56 = 22,055.78 : x
2. Step 2: Convert to fraction form
   31,127.37/42,904.56 = 22,055.78/x
3. Step 3: Cross multiply
   31,127.37x = 42,904.56 × 22,055.78
4. Step 4: Simplify right side
   31,127.37x = 946,293,321.83
5. Step 5: Solve for x
   x = 946,293,321.83/31,127.37
6. Step 6: Final answer
   x = 30,400.68