Finding the Fourth Proportional to 42,786, 64,204.92 and 18,162

Step by Step Solution

1. Step 1: Write the proportion equation
   42,786 : 64,204.92 = 18,162 : x
2. Step 2: Convert to fraction form
   42,786/64,204.92 = 18,162/x
3. Step 3: Cross multiply
   42,786x = 64,204.92 × 18,162
4. Step 4: Simplify right side
   42,786x = 1,166,089,757.04
5. Step 5: Solve for x
   x = 1,166,089,757.04/42,786
6. Step 6: Final answer
   x = 27,254.00