Finding the Fourth Proportional to 34,540.69, 47,665.12 and 20,936.79

Step by Step Solution

1. Step 1: Write the proportion equation
   34,540.69 : 47,665.12 = 20,936.79 : x
2. Step 2: Convert to fraction form
   34,540.69/47,665.12 = 20,936.79/x
3. Step 3: Cross multiply
   34,540.69x = 47,665.12 × 20,936.79
4. Step 4: Simplify right side
   34,540.69x = 997,954,607.76
5. Step 5: Solve for x
   x = 997,954,607.76/34,540.69
6. Step 6: Final answer
   x = 28,892.14