Finding the Fourth Proportional to 216,660,415.33, 298,991,952.69 and 117,541,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   216,660,415.33 : 298,991,952.69 = 117,541,162.72 : x
2. Step 2: Convert to fraction form
   216,660,415.33/298,991,952.69 = 117,541,162.72/x
3. Step 3: Cross multiply
   216,660,415.33x = 298,991,952.69 × 117,541,162.72
4. Step 4: Simplify right side
   216,660,415.33x = 35,143,861,764,044,688
5. Step 5: Solve for x
   x = 35,143,861,764,044,688/216,660,415.33
6. Step 6: Final answer
   x = 162,207,118.96