Finding the Fourth Proportional to 31,077.79, 42,885.86 and 17,647.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.79 : 42,885.86 = 17,647.27 : x
2. Step 2: Convert to fraction form
   31,077.79/42,885.86 = 17,647.27/x
3. Step 3: Cross multiply
   31,077.79x = 42,885.86 × 17,647.27
4. Step 4: Simplify right side
   31,077.79x = 756,818,155.15
5. Step 5: Solve for x
   x = 756,818,155.15/31,077.79
6. Step 6: Final answer
   x = 24,352.38