Finding the Fourth Proportional to 103,708.72, 143,075.46 and 76,917.16

Step by Step Solution

1. Step 1: Write the proportion equation
   103,708.72 : 143,075.46 = 76,917.16 : x
2. Step 2: Convert to fraction form
   103,708.72/143,075.46 = 76,917.16/x
3. Step 3: Cross multiply
   103,708.72x = 143,075.46 × 76,917.16
4. Step 4: Simplify right side
   103,708.72x = 11,004,958,048.89
5. Step 5: Solve for x
   x = 11,004,958,048.89/103,708.72
6. Step 6: Final answer
   x = 106,114.11