Finding the Fourth Proportional to 69,839.96, 104,729.22 and 19,908.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,839.96 : 104,729.22 = 19,908.72 : x
2. Step 2: Convert to fraction form
   69,839.96/104,729.22 = 19,908.72/x
3. Step 3: Cross multiply
   69,839.96x = 104,729.22 × 19,908.72
4. Step 4: Simplify right side
   69,839.96x = 2,085,024,716.80
5. Step 5: Solve for x
   x = 2,085,024,716.80/69,839.96
6. Step 6: Final answer
   x = 29,854.33