Finding the Fourth Proportional to 42,739.70, 58,960.05 and 30,136.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,739.70 : 58,960.05 = 30,136.82 : x
2. Step 2: Convert to fraction form
   42,739.70/58,960.05 = 30,136.82/x
3. Step 3: Cross multiply
   42,739.70x = 58,960.05 × 30,136.82
4. Step 4: Simplify right side
   42,739.70x = 1,776,868,414.04
5. Step 5: Solve for x
   x = 1,776,868,414.04/42,739.70
6. Step 6: Final answer
   x = 41,574.19