Finding the Fourth Proportional to 31,213.10, 43,067.34 and 17,780.67

Step by Step Solution

1. Step 1: Write the proportion equation
   31,213.10 : 43,067.34 = 17,780.67 : x
2. Step 2: Convert to fraction form
   31,213.10/43,067.34 = 17,780.67/x
3. Step 3: Cross multiply
   31,213.10x = 43,067.34 × 17,780.67
4. Step 4: Simplify right side
   31,213.10x = 765,766,160.32
5. Step 5: Solve for x
   x = 765,766,160.32/31,213.10
6. Step 6: Final answer
   x = 24,533.49