Finding the Fourth Proportional to 42,141.45, 58,155.40 and 23,021.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,141.45 : 58,155.40 = 23,021.49 : x
2. Step 2: Convert to fraction form
   42,141.45/58,155.40 = 23,021.49/x
3. Step 3: Cross multiply
   42,141.45x = 58,155.40 × 23,021.49
4. Step 4: Simplify right side
   42,141.45x = 1,338,823,959.55
5. Step 5: Solve for x
   x = 1,338,823,959.55/42,141.45
6. Step 6: Final answer
   x = 31,769.76