Finding the Fourth Proportional to 42,405.40, 63,588.90 and 16,101.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,405.40 : 63,588.90 = 16,101.40 : x
2. Step 2: Convert to fraction form
   42,405.40/63,588.90 = 16,101.40/x
3. Step 3: Cross multiply
   42,405.40x = 63,588.90 × 16,101.40
4. Step 4: Simplify right side
   42,405.40x = 1,023,870,314.46
5. Step 5: Solve for x
   x = 1,023,870,314.46/42,405.40
6. Step 6: Final answer
   x = 24,144.81