Finding the Fourth Proportional to 268,061.60, 402,063.60 and 71,069.60

Step by Step Solution

1. Step 1: Write the proportion equation
   268,061.60 : 402,063.60 = 71,069.60 : x
2. Step 2: Convert to fraction form
   268,061.60/402,063.60 = 71,069.60/x
3. Step 3: Cross multiply
   268,061.60x = 402,063.60 × 71,069.60
4. Step 4: Simplify right side
   268,061.60x = 28,574,499,226.56
5. Step 5: Solve for x
   x = 28,574,499,226.56/268,061.60
6. Step 6: Final answer
   x = 106,596.76