Finding the Fourth Proportional to 31,042.84, 42,840.52 and 18,296.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,042.84 : 42,840.52 = 18,296.56 : x
2. Step 2: Convert to fraction form
   31,042.84/42,840.52 = 18,296.56/x
3. Step 3: Cross multiply
   31,042.84x = 42,840.52 × 18,296.56
4. Step 4: Simplify right side
   31,042.84x = 783,834,144.61
5. Step 5: Solve for x
   x = 783,834,144.61/31,042.84
6. Step 6: Final answer
   x = 25,250.08