Finding the Fourth Proportional to 69,789.39, 104,684.72 and 19,869.45

Step by Step Solution

1. Step 1: Write the proportion equation
   69,789.39 : 104,684.72 = 19,869.45 : x
2. Step 2: Convert to fraction form
   69,789.39/104,684.72 = 19,869.45/x
3. Step 3: Cross multiply
   69,789.39x = 104,684.72 × 19,869.45
4. Step 4: Simplify right side
   69,789.39x = 2,080,027,710.46
5. Step 5: Solve for x
   x = 2,080,027,710.46/69,789.39
6. Step 6: Final answer
   x = 29,804.35