Finding the Fourth Proportional to 103,401.09, 155,178.83 and 76,808.48

Step by Step Solution

1. Step 1: Write the proportion equation
   103,401.09 : 155,178.83 = 76,808.48 : x
2. Step 2: Convert to fraction form
   103,401.09/155,178.83 = 76,808.48/x
3. Step 3: Cross multiply
   103,401.09x = 155,178.83 × 76,808.48
4. Step 4: Simplify right side
   103,401.09x = 11,919,048,900.54
5. Step 5: Solve for x
   x = 11,919,048,900.54/103,401.09
6. Step 6: Final answer
   x = 115,270.05