Finding the Fourth Proportional to 112,825.98, 155,715.40 and 65,078.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,825.98 : 155,715.40 = 65,078.28 : x
2. Step 2: Convert to fraction form
   112,825.98/155,715.40 = 65,078.28/x
3. Step 3: Cross multiply
   112,825.98x = 155,715.40 × 65,078.28
4. Step 4: Simplify right side
   112,825.98x = 10,133,690,401.51
5. Step 5: Solve for x
   x = 10,133,690,401.51/112,825.98
6. Step 6: Final answer
   x = 89,816.99