Finding the Fourth Proportional to 117,931.56, 162,743.22 and 64,217.22

Step by Step Solution

1. Step 1: Write the proportion equation
   117,931.56 : 162,743.22 = 64,217.22 : x
2. Step 2: Convert to fraction form
   117,931.56/162,743.22 = 64,217.22/x
3. Step 3: Cross multiply
   117,931.56x = 162,743.22 × 64,217.22
4. Step 4: Simplify right side
   117,931.56x = 10,450,917,162.25
5. Step 5: Solve for x
   x = 10,450,917,162.25/117,931.56
6. Step 6: Final answer
   x = 88,618.49