Finding the Fourth Proportional to 42,043.59, 63,058.91 and 18,665.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,043.59 : 63,058.91 = 18,665.91 : x
2. Step 2: Convert to fraction form
   42,043.59/63,058.91 = 18,665.91/x
3. Step 3: Cross multiply
   42,043.59x = 63,058.91 × 18,665.91
4. Step 4: Simplify right side
   42,043.59x = 1,177,051,845.43
5. Step 5: Solve for x
   x = 1,177,051,845.43/42,043.59
6. Step 6: Final answer
   x = 27,995.99