Finding the Fourth Proportional to 42,005.39, 57,964.01 and 23,142.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,005.39 : 57,964.01 = 23,142.51 : x
2. Step 2: Convert to fraction form
   42,005.39/57,964.01 = 23,142.51/x
3. Step 3: Cross multiply
   42,005.39x = 57,964.01 × 23,142.51
4. Step 4: Simplify right side
   42,005.39x = 1,341,432,565.35
5. Step 5: Solve for x
   x = 1,341,432,565.35/42,005.39
6. Step 6: Final answer
   x = 31,934.78