Finding the Fourth Proportional to 112,212.42, 168,173.16 and 45,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,212.42 : 168,173.16 = 45,574.50 : x
2. Step 2: Convert to fraction form
   112,212.42/168,173.16 = 45,574.50/x
3. Step 3: Cross multiply
   112,212.42x = 168,173.16 × 45,574.50
4. Step 4: Simplify right side
   112,212.42x = 7,664,407,680.42
5. Step 5: Solve for x
   x = 7,664,407,680.42/112,212.42
6. Step 6: Final answer
   x = 68,302.67