Finding the Fourth Proportional to 42,267.42, 63,414.50 and 20,099.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,267.42 : 63,414.50 = 20,099.75 : x
2. Step 2: Convert to fraction form
   42,267.42/63,414.50 = 20,099.75/x
3. Step 3: Cross multiply
   42,267.42x = 63,414.50 × 20,099.75
4. Step 4: Simplify right side
   42,267.42x = 1,274,615,178.80
5. Step 5: Solve for x
   x = 1,274,615,178.80/42,267.42
6. Step 6: Final answer
   x = 30,155.97