Finding the Fourth Proportional to 112,144.38, 168,212.88 and 45,564.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,144.38 : 168,212.88 = 45,564.78 : x
2. Step 2: Convert to fraction form
   112,144.38/168,212.88 = 45,564.78/x
3. Step 3: Cross multiply
   112,144.38x = 168,212.88 × 45,564.78
4. Step 4: Simplify right side
   112,144.38x = 7,664,582,870.37
5. Step 5: Solve for x
   x = 7,664,582,870.37/112,144.38
6. Step 6: Final answer
   x = 68,345.67