Finding the Fourth Proportional to 76,825, 106,047.66 and 51,689.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,825 : 106,047.66 = 51,689.08 : x
2. Step 2: Convert to fraction form
   76,825/106,047.66 = 51,689.08/x
3. Step 3: Cross multiply
   76,825x = 106,047.66 × 51,689.08
4. Step 4: Simplify right side
   76,825x = 5,481,505,981.55
5. Step 5: Solve for x
   x = 5,481,505,981.55/76,825
6. Step 6: Final answer
   x = 71,350.55