Finding the Fourth Proportional to 216,132, 298,296.72 and 126,708

Step by Step Solution

1. Step 1: Write the proportion equation
   216,132 : 298,296.72 = 126,708 : x
2. Step 2: Convert to fraction form
   216,132/298,296.72 = 126,708/x
3. Step 3: Cross multiply
   216,132x = 298,296.72 × 126,708
4. Step 4: Simplify right side
   216,132x = 37,796,580,797.76
5. Step 5: Solve for x
   x = 37,796,580,797.76/216,132
6. Step 6: Final answer
   x = 174,877.30