Finding the Fourth Proportional to 31,000.14, 42,777.72 and 18,253.85

Step by Step Solution

1. Step 1: Write the proportion equation
   31,000.14 : 42,777.72 = 18,253.85 : x
2. Step 2: Convert to fraction form
   31,000.14/42,777.72 = 18,253.85/x
3. Step 3: Cross multiply
   31,000.14x = 42,777.72 × 18,253.85
4. Step 4: Simplify right side
   31,000.14x = 780,857,870.33
5. Step 5: Solve for x
   x = 780,857,870.33/31,000.14
6. Step 6: Final answer
   x = 25,188.85