Finding the Fourth Proportional to 30,591.41, 42,216.56 and 17,161.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,591.41 : 42,216.56 = 17,161.86 : x
2. Step 2: Convert to fraction form
   30,591.41/42,216.56 = 17,161.86/x
3. Step 3: Cross multiply
   30,591.41x = 42,216.56 × 17,161.86
4. Step 4: Simplify right side
   30,591.41x = 724,514,692.40
5. Step 5: Solve for x
   x = 724,514,692.40/30,591.41
6. Step 6: Final answer
   x = 23,683.60