Finding the Fourth Proportional to 72,648.04, 108,971.90 and 19,340.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72,648.04 : 108,971.90 = 19,340.03 : x
2. Step 2: Convert to fraction form
   72,648.04/108,971.90 = 19,340.03/x
3. Step 3: Cross multiply
   72,648.04x = 108,971.90 × 19,340.03
4. Step 4: Simplify right side
   72,648.04x = 2,107,519,815.16
5. Step 5: Solve for x
   x = 2,107,519,815.16/72,648.04
6. Step 6: Final answer
   x = 29,010.00