Finding the Fourth Proportional to 69,776.18, 104,665.46 and 19,857.56

Step by Step Solution

1. Step 1: Write the proportion equation
   69,776.18 : 104,665.46 = 19,857.56 : x
2. Step 2: Convert to fraction form
   69,776.18/104,665.46 = 19,857.56/x
3. Step 3: Cross multiply
   69,776.18x = 104,665.46 × 19,857.56
4. Step 4: Simplify right side
   69,776.18x = 2,078,400,814.25
5. Step 5: Solve for x
   x = 2,078,400,814.25/69,776.18
6. Step 6: Final answer
   x = 29,786.68