Finding the Fourth Proportional to 42,570.72, 63,852.06 and 20,076.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,570.72 : 63,852.06 = 20,076.18 : x
2. Step 2: Convert to fraction form
   42,570.72/63,852.06 = 20,076.18/x
3. Step 3: Cross multiply
   42,570.72x = 63,852.06 × 20,076.18
4. Step 4: Simplify right side
   42,570.72x = 1,281,905,449.93
5. Step 5: Solve for x
   x = 1,281,905,449.93/42,570.72
6. Step 6: Final answer
   x = 30,112.37