Finding the Fourth Proportional to 78,667.42, 117,957.38 and 26,048.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,667.42 : 117,957.38 = 26,048.20 : x
2. Step 2: Convert to fraction form
   78,667.42/117,957.38 = 26,048.20/x
3. Step 3: Cross multiply
   78,667.42x = 117,957.38 × 26,048.20
4. Step 4: Simplify right side
   78,667.42x = 3,072,576,835.93
5. Step 5: Solve for x
   x = 3,072,576,835.93/78,667.42
6. Step 6: Final answer
   x = 39,057.81