Finding the Fourth Proportional to 30,771.76, 42,459.82 and 17,156.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,771.76 : 42,459.82 = 17,156.84 : x
2. Step 2: Convert to fraction form
   30,771.76/42,459.82 = 17,156.84/x
3. Step 3: Cross multiply
   30,771.76x = 42,459.82 × 17,156.84
4. Step 4: Simplify right side
   30,771.76x = 728,476,338.17
5. Step 5: Solve for x
   x = 728,476,338.17/30,771.76
6. Step 6: Final answer
   x = 23,673.54