Finding the Fourth Proportional to 72,419.88, 108,629.91 and 19,829.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419.88 : 108,629.91 = 19,829.82 : x
2. Step 2: Convert to fraction form
   72,419.88/108,629.91 = 19,829.82/x
3. Step 3: Cross multiply
   72,419.88x = 108,629.91 × 19,829.82
4. Step 4: Simplify right side
   72,419.88x = 2,154,111,561.92
5. Step 5: Solve for x
   x = 2,154,111,561.92/72,419.88
6. Step 6: Final answer
   x = 29,744.75