Finding the Fourth Proportional to 42,274.96, 63,412.98 and 20,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,274.96 : 63,412.98 = 20,090.50 : x
2. Step 2: Convert to fraction form
   42,274.96/63,412.98 = 20,090.50/x
3. Step 3: Cross multiply
   42,274.96x = 63,412.98 × 20,090.50
4. Step 4: Simplify right side
   42,274.96x = 1,273,998,474.69
5. Step 5: Solve for x
   x = 1,273,998,474.69/42,274.96
6. Step 6: Final answer
   x = 30,136.01