Finding the Fourth Proportional to 31,011.54, 42,795.63 and 16,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.54 : 42,795.63 = 16,864.50 : x
2. Step 2: Convert to fraction form
   31,011.54/42,795.63 = 16,864.50/x
3. Step 3: Cross multiply
   31,011.54x = 42,795.63 × 16,864.50
4. Step 4: Simplify right side
   31,011.54x = 721,726,902.14
5. Step 5: Solve for x
   x = 721,726,902.14/31,011.54
6. Step 6: Final answer
   x = 23,272.85