Finding the Fourth Proportional to 78,745.92, 108,667 and 42,936.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,745.92 : 108,667 = 42,936.63 : x
2. Step 2: Convert to fraction form
   78,745.92/108,667 = 42,936.63/x
3. Step 3: Cross multiply
   78,745.92x = 108,667 × 42,936.63
4. Step 4: Simplify right side
   78,745.92x = 4,665,794,772.21
5. Step 5: Solve for x
   x = 4,665,794,772.21/78,745.92
6. Step 6: Final answer
   x = 59,251.26