Finding the Fourth Proportional to 30,942.38, 42,700.56 and 19,005.54

Step by Step Solution

1. Step 1: Write the proportion equation
   30,942.38 : 42,700.56 = 19,005.54 : x
2. Step 2: Convert to fraction form
   30,942.38/42,700.56 = 19,005.54/x
3. Step 3: Cross multiply
   30,942.38x = 42,700.56 × 19,005.54
4. Step 4: Simplify right side
   30,942.38x = 811,547,201.10
5. Step 5: Solve for x
   x = 811,547,201.10/30,942.38
6. Step 6: Final answer
   x = 26,227.69