Finding the Fourth Proportional to 31,467.52, 43,410.72 and 20,131.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,467.52 : 43,410.72 = 20,131.36 : x
2. Step 2: Convert to fraction form
   31,467.52/43,410.72 = 20,131.36/x
3. Step 3: Cross multiply
   31,467.52x = 43,410.72 × 20,131.36
4. Step 4: Simplify right side
   31,467.52x = 873,916,832.18
5. Step 5: Solve for x
   x = 873,916,832.18/31,467.52
6. Step 6: Final answer
   x = 27,772.03