Finding the Fourth Proportional to 42,008.58, 57,969.72 and 23,145.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,008.58 : 57,969.72 = 23,145.30 : x
2. Step 2: Convert to fraction form
   42,008.58/57,969.72 = 23,145.30/x
3. Step 3: Cross multiply
   42,008.58x = 57,969.72 × 23,145.30
4. Step 4: Simplify right side
   42,008.58x = 1,341,726,560.32
5. Step 5: Solve for x
   x = 1,341,726,560.32/42,008.58
6. Step 6: Final answer
   x = 31,939.35