Finding the Fourth Proportional to 31,011.53, 42,795.90 and 16,864.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.53 : 42,795.90 = 16,864.34 : x
2. Step 2: Convert to fraction form
   31,011.53/42,795.90 = 16,864.34/x
3. Step 3: Cross multiply
   31,011.53x = 42,795.90 × 16,864.34
4. Step 4: Simplify right side
   31,011.53x = 721,724,394.23
5. Step 5: Solve for x
   x = 721,724,394.23/31,011.53
6. Step 6: Final answer
   x = 23,272.78