Finding the Fourth Proportional to 31,050.44, 42,855.20 and 18,302.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,050.44 : 42,855.20 = 18,302.89 : x
2. Step 2: Convert to fraction form
   31,050.44/42,855.20 = 18,302.89/x
3. Step 3: Cross multiply
   31,050.44x = 42,855.20 × 18,302.89
4. Step 4: Simplify right side
   31,050.44x = 784,373,892.81
5. Step 5: Solve for x
   x = 784,373,892.81/31,050.44
6. Step 6: Final answer
   x = 25,261.28