Finding the Fourth Proportional to 42,057.82, 63,093.05 and 13,585.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,057.82 : 63,093.05 = 13,585.27 : x
2. Step 2: Convert to fraction form
   42,057.82/63,093.05 = 13,585.27/x
3. Step 3: Cross multiply
   42,057.82x = 63,093.05 × 13,585.27
4. Step 4: Simplify right side
   42,057.82x = 857,136,139.38
5. Step 5: Solve for x
   x = 857,136,139.38/42,057.82
6. Step 6: Final answer
   x = 20,379.95