Finding the Fourth Proportional to 108,216, 162,390.42 and 45,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,216 : 162,390.42 = 45,886.50 : x
2. Step 2: Convert to fraction form
   108,216/162,390.42 = 45,886.50/x
3. Step 3: Cross multiply
   108,216x = 162,390.42 × 45,886.50
4. Step 4: Simplify right side
   108,216x = 7,451,528,007.33
5. Step 5: Solve for x
   x = 7,451,528,007.33/108,216
6. Step 6: Final answer
   x = 68,857.91