Finding the Fourth Proportional to 31,184.62, 43,081.82 and 20,454.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,184.62 : 43,081.82 = 20,454.96 : x
2. Step 2: Convert to fraction form
   31,184.62/43,081.82 = 20,454.96/x
3. Step 3: Cross multiply
   31,184.62x = 43,081.82 × 20,454.96
4. Step 4: Simplify right side
   31,184.62x = 881,236,904.83
5. Step 5: Solve for x
   x = 881,236,904.83/31,184.62
6. Step 6: Final answer
   x = 28,258.70