Finding the Fourth Proportional to 42,628.48, 58,899.52 and 30,668.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,628.48 : 58,899.52 = 30,668.16 : x
2. Step 2: Convert to fraction form
   42,628.48/58,899.52 = 30,668.16/x
3. Step 3: Cross multiply
   42,628.48x = 58,899.52 × 30,668.16
4. Step 4: Simplify right side
   42,628.48x = 1,806,339,903.28
5. Step 5: Solve for x
   x = 1,806,339,903.28/42,628.48
6. Step 6: Final answer
   x = 42,374.02