Finding the Fourth Proportional to 78,745.92, 108,667.80 and 42,936.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,745.92 : 108,667.80 = 42,936.18 : x
2. Step 2: Convert to fraction form
   78,745.92/108,667.80 = 42,936.18/x
3. Step 3: Cross multiply
   78,745.92x = 108,667.80 × 42,936.18
4. Step 4: Simplify right side
   78,745.92x = 4,665,780,221.00
5. Step 5: Solve for x
   x = 4,665,780,221.00/78,745.92
6. Step 6: Final answer
   x = 59,251.07