Finding the Fourth Proportional to 31,022.86, 42,812 and 16,875.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.86 : 42,812 = 16,875.74 : x
2. Step 2: Convert to fraction form
   31,022.86/42,812 = 16,875.74/x
3. Step 3: Cross multiply
   31,022.86x = 42,812 × 16,875.74
4. Step 4: Simplify right side
   31,022.86x = 722,484,180.88
5. Step 5: Solve for x
   x = 722,484,180.88/31,022.86
6. Step 6: Final answer
   x = 23,288.77