Finding the Fourth Proportional to 42,013.59, 63,013.91 and 18,635.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,013.59 : 63,013.91 = 18,635.91 : x
2. Step 2: Convert to fraction form
   42,013.59/63,013.91 = 18,635.91/x
3. Step 3: Cross multiply
   42,013.59x = 63,013.91 × 18,635.91
4. Step 4: Simplify right side
   42,013.59x = 1,174,321,462.33
5. Step 5: Solve for x
   x = 1,174,321,462.33/42,013.59
6. Step 6: Final answer
   x = 27,950.99