Finding the Fourth Proportional to 31,256.78, 43,089.51 and 22,288.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,256.78 : 43,089.51 = 22,288.73 : x
2. Step 2: Convert to fraction form
   31,256.78/43,089.51 = 22,288.73/x
3. Step 3: Cross multiply
   31,256.78x = 43,089.51 × 22,288.73
4. Step 4: Simplify right side
   31,256.78x = 960,410,238.77
5. Step 5: Solve for x
   x = 960,410,238.77/31,256.78
6. Step 6: Final answer
   x = 30,726.47