Finding the Fourth Proportional to 55,872.42, 83,790.72 and 18,424.08

Step by Step Solution

1. Step 1: Write the proportion equation
   55,872.42 : 83,790.72 = 18,424.08 : x
2. Step 2: Convert to fraction form
   55,872.42/83,790.72 = 18,424.08/x
3. Step 3: Cross multiply
   55,872.42x = 83,790.72 × 18,424.08
4. Step 4: Simplify right side
   55,872.42x = 1,543,766,928.54
5. Step 5: Solve for x
   x = 1,543,766,928.54/55,872.42
6. Step 6: Final answer
   x = 27,630.21