Finding the Fourth Proportional to 31,023.20, 42,832.52 and 23,840.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,023.20 : 42,832.52 = 23,840.28 : x
2. Step 2: Convert to fraction form
   31,023.20/42,832.52 = 23,840.28/x
3. Step 3: Cross multiply
   31,023.20x = 42,832.52 × 23,840.28
4. Step 4: Simplify right side
   31,023.20x = 1,021,139,269.91
5. Step 5: Solve for x
   x = 1,021,139,269.91/31,023.20
6. Step 6: Final answer
   x = 32,915.34