Finding the Fourth Proportional to 54,476.16, 81,672.72 and 28,164.12

Step by Step Solution

1. Step 1: Write the proportion equation
   54,476.16 : 81,672.72 = 28,164.12 : x
2. Step 2: Convert to fraction form
   54,476.16/81,672.72 = 28,164.12/x
3. Step 3: Cross multiply
   54,476.16x = 81,672.72 × 28,164.12
4. Step 4: Simplify right side
   54,476.16x = 2,300,240,286.81
5. Step 5: Solve for x
   x = 2,300,240,286.81/54,476.16
6. Step 6: Final answer
   x = 42,224.71