Finding the Fourth Proportional to 30,565.78, 42,181.83 and 17,137.19

Step by Step Solution

1. Step 1: Write the proportion equation
   30,565.78 : 42,181.83 = 17,137.19 : x
2. Step 2: Convert to fraction form
   30,565.78/42,181.83 = 17,137.19/x
3. Step 3: Cross multiply
   30,565.78x = 42,181.83 × 17,137.19
4. Step 4: Simplify right side
   30,565.78x = 722,878,140.71
5. Step 5: Solve for x
   x = 722,878,140.71/30,565.78
6. Step 6: Final answer
   x = 23,649.92