Finding the Fourth Proportional to 31,072.50, 42,884.10 and 18,497.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.50 : 42,884.10 = 18,497.25 : x
2. Step 2: Convert to fraction form
   31,072.50/42,884.10 = 18,497.25/x
3. Step 3: Cross multiply
   31,072.50x = 42,884.10 × 18,497.25
4. Step 4: Simplify right side
   31,072.50x = 793,237,918.73
5. Step 5: Solve for x
   x = 793,237,918.73/31,072.50
6. Step 6: Final answer
   x = 25,528.62