Finding the Fourth Proportional to 31,540.50, 43,526.52 and 20,381.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,540.50 : 43,526.52 = 20,381.94 : x
2. Step 2: Convert to fraction form
   31,540.50/43,526.52 = 20,381.94/x
3. Step 3: Cross multiply
   31,540.50x = 43,526.52 × 20,381.94
4. Step 4: Simplify right side
   31,540.50x = 887,154,919.05
5. Step 5: Solve for x
   x = 887,154,919.05/31,540.50
6. Step 6: Final answer
   x = 28,127.48