Finding the Fourth Proportional to 42,139.45, 58,152.64 and 23,019.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,139.45 : 58,152.64 = 23,019.49 : x
2. Step 2: Convert to fraction form
   42,139.45/58,152.64 = 23,019.49/x
3. Step 3: Cross multiply
   42,139.45x = 58,152.64 × 23,019.49
4. Step 4: Simplify right side
   42,139.45x = 1,338,644,057.40
5. Step 5: Solve for x
   x = 1,338,644,057.40/42,139.45
6. Step 6: Final answer
   x = 31,767.00