Finding the Fourth Proportional to 108,328.32, 162,375.39 and 45,131.49

Step by Step Solution

1. Step 1: Write the proportion equation
   108,328.32 : 162,375.39 = 45,131.49 : x
2. Step 2: Convert to fraction form
   108,328.32/162,375.39 = 45,131.49/x
3. Step 3: Cross multiply
   108,328.32x = 162,375.39 × 45,131.49
4. Step 4: Simplify right side
   108,328.32x = 7,328,243,290.03
5. Step 5: Solve for x
   x = 7,328,243,290.03/108,328.32
6. Step 6: Final answer
   x = 67,648.45