Finding the Fourth Proportional to 31,123.20, 42,963.84 and 18,552.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,123.20 : 42,963.84 = 18,552.32 : x
2. Step 2: Convert to fraction form
   31,123.20/42,963.84 = 18,552.32/x
3. Step 3: Cross multiply
   31,123.20x = 42,963.84 × 18,552.32
4. Step 4: Simplify right side
   31,123.20x = 797,078,908.11
5. Step 5: Solve for x
   x = 797,078,908.11/31,123.20
6. Step 6: Final answer
   x = 25,610.44