Finding the Fourth Proportional to 31,061.34, 42,867.90 and 19,124.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,061.34 : 42,867.90 = 19,124.37 : x
2. Step 2: Convert to fraction form
   31,061.34/42,867.90 = 19,124.37/x
3. Step 3: Cross multiply
   31,061.34x = 42,867.90 × 19,124.37
4. Step 4: Simplify right side
   31,061.34x = 819,821,580.72
5. Step 5: Solve for x
   x = 819,821,580.72/31,061.34
6. Step 6: Final answer
   x = 26,393.63