Finding the Fourth Proportional to 72,215.49, 108,301.37 and 19,618.14

Step by Step Solution

1. Step 1: Write the proportion equation
   72,215.49 : 108,301.37 = 19,618.14 : x
2. Step 2: Convert to fraction form
   72,215.49/108,301.37 = 19,618.14/x
3. Step 3: Cross multiply
   72,215.49x = 108,301.37 × 19,618.14
4. Step 4: Simplify right side
   72,215.49x = 2,124,671,340.76
5. Step 5: Solve for x
   x = 2,124,671,340.76/72,215.49
6. Step 6: Final answer
   x = 29,421.27