Finding the Fourth Proportional to 74,800.72, 112,168.24 and 28,020.80

Step by Step Solution

1. Step 1: Write the proportion equation
   74,800.72 : 112,168.24 = 28,020.80 : x
2. Step 2: Convert to fraction form
   74,800.72/112,168.24 = 28,020.80/x
3. Step 3: Cross multiply
   74,800.72x = 112,168.24 × 28,020.80
4. Step 4: Simplify right side
   74,800.72x = 3,143,043,819.39
5. Step 5: Solve for x
   x = 3,143,043,819.39/74,800.72
6. Step 6: Final answer
   x = 42,018.90