Finding the Fourth Proportional to 117,632,371.27, 162,331,776.49 and 64,707,942.20

Step by Step Solution

1. Step 1: Write the proportion equation
   117,632,371.27 : 162,331,776.49 = 64,707,942.20 : x
2. Step 2: Convert to fraction form
   117,632,371.27/162,331,776.49 = 64,707,942.20/x
3. Step 3: Cross multiply
   117,632,371.27x = 162,331,776.49 × 64,707,942.20
4. Step 4: Simplify right side
   117,632,371.27x = 10,504,155,210,338,240
5. Step 5: Solve for x
   x = 10,504,155,210,338,240/117,632,371.27
6. Step 6: Final answer
   x = 89,296,467.44