Finding the Fourth Proportional to 30,478.06, 42,085.68 and 19,166.49

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.06 : 42,085.68 = 19,166.49 : x
2. Step 2: Convert to fraction form
   30,478.06/42,085.68 = 19,166.49/x
3. Step 3: Cross multiply
   30,478.06x = 42,085.68 × 19,166.49
4. Step 4: Simplify right side
   30,478.06x = 806,634,764.86
5. Step 5: Solve for x
   x = 806,634,764.86/30,478.06
6. Step 6: Final answer
   x = 26,466.08