Finding the Fourth Proportional to 42,042.78, 58,018.68 and 23,179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,042.78 : 58,018.68 = 23,179.50 : x
2. Step 2: Convert to fraction form
   42,042.78/58,018.68 = 23,179.50/x
3. Step 3: Cross multiply
   42,042.78x = 58,018.68 × 23,179.50
4. Step 4: Simplify right side
   42,042.78x = 1,344,843,993.06
5. Step 5: Solve for x
   x = 1,344,843,993.06/42,042.78
6. Step 6: Final answer
   x = 31,987.51