Finding the Fourth Proportional to 31,104.78, 42,925.47 and 19,007.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.78 : 42,925.47 = 19,007.22 : x
2. Step 2: Convert to fraction form
   31,104.78/42,925.47 = 19,007.22/x
3. Step 3: Cross multiply
   31,104.78x = 42,925.47 × 19,007.22
4. Step 4: Simplify right side
   31,104.78x = 815,893,851.89
5. Step 5: Solve for x
   x = 815,893,851.89/31,104.78
6. Step 6: Final answer
   x = 26,230.50