Finding the Fourth Proportional to 112,143.35, 168,173.10 and 45,561.05

Step by Step Solution

1. Step 1: Write the proportion equation
   112,143.35 : 168,173.10 = 45,561.05 : x
2. Step 2: Convert to fraction form
   112,143.35/168,173.10 = 45,561.05/x
3. Step 3: Cross multiply
   112,143.35x = 168,173.10 × 45,561.05
4. Step 4: Simplify right side
   112,143.35x = 7,662,142,176.89
5. Step 5: Solve for x
   x = 7,662,142,176.89/112,143.35
6. Step 6: Final answer
   x = 68,324.54