Finding the Fourth Proportional to 42,369.49, 63,554.61 and 10,779.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,369.49 : 63,554.61 = 10,779.58 : x
2. Step 2: Convert to fraction form
   42,369.49/63,554.61 = 10,779.58/x
3. Step 3: Cross multiply
   42,369.49x = 63,554.61 × 10,779.58
4. Step 4: Simplify right side
   42,369.49x = 685,092,107.57
5. Step 5: Solve for x
   x = 685,092,107.57/42,369.49
6. Step 6: Final answer
   x = 16,169.47