Finding the Fourth Proportional to 42,428.26, 58,564.73 and 30,526.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,428.26 : 58,564.73 = 30,526.20 : x
2. Step 2: Convert to fraction form
   42,428.26/58,564.73 = 30,526.20/x
3. Step 3: Cross multiply
   42,428.26x = 58,564.73 × 30,526.20
4. Step 4: Simplify right side
   42,428.26x = 1,787,758,660.93
5. Step 5: Solve for x
   x = 1,787,758,660.93/42,428.26
6. Step 6: Final answer
   x = 42,136.04