Finding the Fourth Proportional to 112,811.42, 169,217.52 and 28,571.54

Step by Step Solution

1. Step 1: Write the proportion equation
   112,811.42 : 169,217.52 = 28,571.54 : x
2. Step 2: Convert to fraction form
   112,811.42/169,217.52 = 28,571.54/x
3. Step 3: Cross multiply
   112,811.42x = 169,217.52 × 28,571.54
4. Step 4: Simplify right side
   112,811.42x = 4,834,805,141.38
5. Step 5: Solve for x
   x = 4,834,805,141.38/112,811.42
6. Step 6: Final answer
   x = 42,857.41