Finding the Fourth Proportional to 30,547.80, 42,155.15 and 17,119.89

Step by Step Solution

1. Step 1: Write the proportion equation
   30,547.80 : 42,155.15 = 17,119.89 : x
2. Step 2: Convert to fraction form
   30,547.80/42,155.15 = 17,119.89/x
3. Step 3: Cross multiply
   30,547.80x = 42,155.15 × 17,119.89
4. Step 4: Simplify right side
   30,547.80x = 721,691,445.33
5. Step 5: Solve for x
   x = 721,691,445.33/30,547.80
6. Step 6: Final answer
   x = 23,624.99