Finding the Fourth Proportional to 31,055.37, 42,862.48 and 19,738.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.37 : 42,862.48 = 19,738.05 : x
2. Step 2: Convert to fraction form
   31,055.37/42,862.48 = 19,738.05/x
3. Step 3: Cross multiply
   31,055.37x = 42,862.48 × 19,738.05
4. Step 4: Simplify right side
   31,055.37x = 846,021,724.02
5. Step 5: Solve for x
   x = 846,021,724.02/31,055.37
6. Step 6: Final answer
   x = 27,242.36