Finding the Fourth Proportional to 42,271.46, 63,407.73 and 20,087

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271.46 : 63,407.73 = 20,087 : x
2. Step 2: Convert to fraction form
   42,271.46/63,407.73 = 20,087/x
3. Step 3: Cross multiply
   42,271.46x = 63,407.73 × 20,087
4. Step 4: Simplify right side
   42,271.46x = 1,273,671,072.51
5. Step 5: Solve for x
   x = 1,273,671,072.51/42,271.46
6. Step 6: Final answer
   x = 30,130.76