Finding the Fourth Proportional to 402,401.50, 603,695.60 and 118,080.56

Step by Step Solution

1. Step 1: Write the proportion equation
   402,401.50 : 603,695.60 = 118,080.56 : x
2. Step 2: Convert to fraction form
   402,401.50/603,695.60 = 118,080.56/x
3. Step 3: Cross multiply
   402,401.50x = 603,695.60 × 118,080.56
4. Step 4: Simplify right side
   402,401.50x = 71,284,714,517.54
5. Step 5: Solve for x
   x = 71,284,714,517.54/402,401.50
6. Step 6: Final answer
   x = 177,148.23