Finding the Fourth Proportional to 42,957.07, 64,460.72 and 17,995

Step by Step Solution

1. Step 1: Write the proportion equation
   42,957.07 : 64,460.72 = 17,995 : x
2. Step 2: Convert to fraction form
   42,957.07/64,460.72 = 17,995/x
3. Step 3: Cross multiply
   42,957.07x = 64,460.72 × 17,995
4. Step 4: Simplify right side
   42,957.07x = 1,159,970,656.40
5. Step 5: Solve for x
   x = 1,159,970,656.40/42,957.07
6. Step 6: Final answer
   x = 27,003.02