Finding the Fourth Proportional to 42,895, 64,368.42 and 18,271

Step by Step Solution

1. Step 1: Write the proportion equation
   42,895 : 64,368.42 = 18,271 : x
2. Step 2: Convert to fraction form
   42,895/64,368.42 = 18,271/x
3. Step 3: Cross multiply
   42,895x = 64,368.42 × 18,271
4. Step 4: Simplify right side
   42,895x = 1,176,075,401.82
5. Step 5: Solve for x
   x = 1,176,075,401.82/42,895
6. Step 6: Final answer
   x = 27,417.54