Finding the Fourth Proportional to 42,270.96, 63,406.98 and 20,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,270.96 : 63,406.98 = 20,086.50 : x
2. Step 2: Convert to fraction form
   42,270.96/63,406.98 = 20,086.50/x
3. Step 3: Cross multiply
   42,270.96x = 63,406.98 × 20,086.50
4. Step 4: Simplify right side
   42,270.96x = 1,273,624,303.77
5. Step 5: Solve for x
   x = 1,273,624,303.77/42,270.96
6. Step 6: Final answer
   x = 30,130.01