Finding the Fourth Proportional to 42,983.19, 64,486.71 and 18,017.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,983.19 : 64,486.71 = 18,017.37 : x
2. Step 2: Convert to fraction form
   42,983.19/64,486.71 = 18,017.37/x
3. Step 3: Cross multiply
   42,983.19x = 64,486.71 × 18,017.37
4. Step 4: Simplify right side
   42,983.19x = 1,161,880,914.15
5. Step 5: Solve for x
   x = 1,161,880,914.15/42,983.19
6. Step 6: Final answer
   x = 27,031.05