Finding the Fourth Proportional to 42,145.28, 63,249.02 and 19,958.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.28 : 63,249.02 = 19,958.61 : x
2. Step 2: Convert to fraction form
   42,145.28/63,249.02 = 19,958.61/x
3. Step 3: Cross multiply
   42,145.28x = 63,249.02 × 19,958.61
4. Step 4: Simplify right side
   42,145.28x = 1,262,362,423.27
5. Step 5: Solve for x
   x = 1,262,362,423.27/42,145.28
6. Step 6: Final answer
   x = 29,952.64