Finding the Fourth Proportional to 30,700.49, 42,371.86 and 17,777.89

Step by Step Solution

1. Step 1: Write the proportion equation
   30,700.49 : 42,371.86 = 17,777.89 : x
2. Step 2: Convert to fraction form
   30,700.49/42,371.86 = 17,777.89/x
3. Step 3: Cross multiply
   30,700.49x = 42,371.86 × 17,777.89
4. Step 4: Simplify right side
   30,700.49x = 753,282,266.18
5. Step 5: Solve for x
   x = 753,282,266.18/30,700.49
6. Step 6: Final answer
   x = 24,536.49