Finding the Fourth Proportional to 30,446.19, 42,003.12 and 19,112.04

Step by Step Solution

1. Step 1: Write the proportion equation
   30,446.19 : 42,003.12 = 19,112.04 : x
2. Step 2: Convert to fraction form
   30,446.19/42,003.12 = 19,112.04/x
3. Step 3: Cross multiply
   30,446.19x = 42,003.12 × 19,112.04
4. Step 4: Simplify right side
   30,446.19x = 802,765,309.56
5. Step 5: Solve for x
   x = 802,765,309.56/30,446.19
6. Step 6: Final answer
   x = 26,366.69