Finding the Fourth Proportional to 42,138.23, 58,150.20 and 23,019.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,138.23 : 58,150.20 = 23,019.76 : x
2. Step 2: Convert to fraction form
   42,138.23/58,150.20 = 23,019.76/x
3. Step 3: Cross multiply
   42,138.23x = 58,150.20 × 23,019.76
4. Step 4: Simplify right side
   42,138.23x = 1,338,603,806.96
5. Step 5: Solve for x
   x = 1,338,603,806.96/42,138.23
6. Step 6: Final answer
   x = 31,766.97