Finding the Fourth Proportional to 42,935.77, 64,403.82 and 17,958.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,935.77 : 64,403.82 = 17,958.30 : x
2. Step 2: Convert to fraction form
   42,935.77/64,403.82 = 17,958.30/x
3. Step 3: Cross multiply
   42,935.77x = 64,403.82 × 17,958.30
4. Step 4: Simplify right side
   42,935.77x = 1,156,582,708.90
5. Step 5: Solve for x
   x = 1,156,582,708.90/42,935.77
6. Step 6: Final answer
   x = 26,937.51