Finding the Fourth Proportional to 42,298.07, 58,290.98 and 30,340.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,298.07 : 58,290.98 = 30,340.71 : x
2. Step 2: Convert to fraction form
   42,298.07/58,290.98 = 30,340.71/x
3. Step 3: Cross multiply
   42,298.07x = 58,290.98 × 30,340.71
4. Step 4: Simplify right side
   42,298.07x = 1,768,589,568.09
5. Step 5: Solve for x
   x = 1,768,589,568.09/42,298.07
6. Step 6: Final answer
   x = 41,812.54