Finding the Fourth Proportional to 116,805, 175,318.20 and 72,297.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,805 : 175,318.20 = 72,297.12 : x
2. Step 2: Convert to fraction form
   116,805/175,318.20 = 72,297.12/x
3. Step 3: Cross multiply
   116,805x = 175,318.20 × 72,297.12
4. Step 4: Simplify right side
   116,805x = 12,675,000,943.58
5. Step 5: Solve for x
   x = 12,675,000,943.58/116,805
6. Step 6: Final answer
   x = 108,514.20