Finding the Fourth Proportional to 42,007.98, 57,971.19 and 23,145.11

Step by Step Solution

1. Step 1: Write the proportion equation
   42,007.98 : 57,971.19 = 23,145.11 : x
2. Step 2: Convert to fraction form
   42,007.98/57,971.19 = 23,145.11/x
3. Step 3: Cross multiply
   42,007.98x = 57,971.19 × 23,145.11
4. Step 4: Simplify right side
   42,007.98x = 1,341,749,279.52
5. Step 5: Solve for x
   x = 1,341,749,279.52/42,007.98
6. Step 6: Final answer
   x = 31,940.34