Finding the Fourth Proportional to 42,145.83, 63,218.52 and 17,185.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.83 : 63,218.52 = 17,185.77 : x
2. Step 2: Convert to fraction form
   42,145.83/63,218.52 = 17,185.77/x
3. Step 3: Cross multiply
   42,145.83x = 63,218.52 × 17,185.77
4. Step 4: Simplify right side
   42,145.83x = 1,086,458,944.46
5. Step 5: Solve for x
   x = 1,086,458,944.46/42,145.83
6. Step 6: Final answer
   x = 25,778.56