Finding the Fourth Proportional to 31,116.91, 42,939.87 and 19,037.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116.91 : 42,939.87 = 19,037.48 : x
2. Step 2: Convert to fraction form
   31,116.91/42,939.87 = 19,037.48/x
3. Step 3: Cross multiply
   31,116.91x = 42,939.87 × 19,037.48
4. Step 4: Simplify right side
   31,116.91x = 817,466,978.86
5. Step 5: Solve for x
   x = 817,466,978.86/31,116.91
6. Step 6: Final answer
   x = 26,270.83