Finding the Fourth Proportional to 42,196.28, 58,235.56 and 30,860.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,196.28 : 58,235.56 = 30,860.33 : x
2. Step 2: Convert to fraction form
   42,196.28/58,235.56 = 30,860.33/x
3. Step 3: Cross multiply
   42,196.28x = 58,235.56 × 30,860.33
4. Step 4: Simplify right side
   42,196.28x = 1,797,168,231.01
5. Step 5: Solve for x
   x = 1,797,168,231.01/42,196.28
6. Step 6: Final answer
   x = 42,590.68