Finding the Fourth Proportional to 30,477.36, 42,063.69 and 19,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,477.36 : 42,063.69 = 19,148.50 : x
2. Step 2: Convert to fraction form
   30,477.36/42,063.69 = 19,148.50/x
3. Step 3: Cross multiply
   30,477.36x = 42,063.69 × 19,148.50
4. Step 4: Simplify right side
   30,477.36x = 805,456,584.64
5. Step 5: Solve for x
   x = 805,456,584.64/30,477.36
6. Step 6: Final answer
   x = 26,428.03