Finding the Fourth Proportional to 30,416.65, 42,003.83 and 28,760.00

Step by Step Solution

1. Step 1: Write the proportion equation
   30,416.65 : 42,003.83 = 28,760.00 : x
2. Step 2: Convert to fraction form
   30,416.65/42,003.83 = 28,760.00/x
3. Step 3: Cross multiply
   30,416.65x = 42,003.83 × 28,760.00
4. Step 4: Simplify right side
   30,416.65x = 1,208,030,012.68
5. Step 5: Solve for x
   x = 1,208,030,012.68/30,416.65
6. Step 6: Final answer
   x = 39,716.08