Finding the Fourth Proportional to 31,753.12, 43,798.38 and 20,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,753.12 : 43,798.38 = 20,404.72 : x
2. Step 2: Convert to fraction form
   31,753.12/43,798.38 = 20,404.72/x
3. Step 3: Cross multiply
   31,753.12x = 43,798.38 × 20,404.72
4. Step 4: Simplify right side
   31,753.12x = 893,693,680.35
5. Step 5: Solve for x
   x = 893,693,680.35/31,753.12
6. Step 6: Final answer
   x = 28,145.07