Finding the Fourth Proportional to 31,025.61, 42,801.62 and 19,081.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,025.61 : 42,801.62 = 19,081.89 : x
2. Step 2: Convert to fraction form
   31,025.61/42,801.62 = 19,081.89/x
3. Step 3: Cross multiply
   31,025.61x = 42,801.62 × 19,081.89
4. Step 4: Simplify right side
   31,025.61x = 816,735,709.25
5. Step 5: Solve for x
   x = 816,735,709.25/31,025.61
6. Step 6: Final answer
   x = 26,324.57