Finding the Fourth Proportional to 42,044.39, 63,078.88 and 13,580.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,044.39 : 63,078.88 = 13,580.69 : x
2. Step 2: Convert to fraction form
   42,044.39/63,078.88 = 13,580.69/x
3. Step 3: Cross multiply
   42,044.39x = 63,078.88 × 13,580.69
4. Step 4: Simplify right side
   42,044.39x = 856,654,714.83
5. Step 5: Solve for x
   x = 856,654,714.83/42,044.39
6. Step 6: Final answer
   x = 20,375.01