Finding the Fourth Proportional to 30,515.15, 42,105.83 and 19,176.59

Step by Step Solution

1. Step 1: Write the proportion equation
   30,515.15 : 42,105.83 = 19,176.59 : x
2. Step 2: Convert to fraction form
   30,515.15/42,105.83 = 19,176.59/x
3. Step 3: Cross multiply
   30,515.15x = 42,105.83 × 19,176.59
4. Step 4: Simplify right side
   30,515.15x = 807,446,238.52
5. Step 5: Solve for x
   x = 807,446,238.52/30,515.15
6. Step 6: Final answer
   x = 26,460.50