Finding the Fourth Proportional to 113,777.48, 170,527.62 and 80,507

Step by Step Solution

1. Step 1: Write the proportion equation
   113,777.48 : 170,527.62 = 80,507 : x
2. Step 2: Convert to fraction form
   113,777.48/170,527.62 = 80,507/x
3. Step 3: Cross multiply
   113,777.48x = 170,527.62 × 80,507
4. Step 4: Simplify right side
   113,777.48x = 13,728,667,103.34
5. Step 5: Solve for x
   x = 13,728,667,103.34/113,777.48
6. Step 6: Final answer
   x = 120,662.43