Finding the Fourth Proportional to 42,957.57, 64,461.47 and 17,995.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,957.57 : 64,461.47 = 17,995.50 : x
2. Step 2: Convert to fraction form
   42,957.57/64,461.47 = 17,995.50/x
3. Step 3: Cross multiply
   42,957.57x = 64,461.47 × 17,995.50
4. Step 4: Simplify right side
   42,957.57x = 1,160,016,383.39
5. Step 5: Solve for x
   x = 1,160,016,383.39/42,957.57
6. Step 6: Final answer
   x = 27,003.77