Finding the Fourth Proportional to 42,140.28, 58,153.80 and 23,019.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,140.28 : 58,153.80 = 23,019.48 : x
2. Step 2: Convert to fraction form
   42,140.28/58,153.80 = 23,019.48/x
3. Step 3: Cross multiply
   42,140.28x = 58,153.80 × 23,019.48
4. Step 4: Simplify right side
   42,140.28x = 1,338,670,236.02
5. Step 5: Solve for x
   x = 1,338,670,236.02/42,140.28
6. Step 6: Final answer
   x = 31,767.00