Finding the Fourth Proportional to 28,608.73, 42,857.74 and 16,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,608.73 : 42,857.74 = 16,090.72 : x
2. Step 2: Convert to fraction form
   28,608.73/42,857.74 = 16,090.72/x
3. Step 3: Cross multiply
   28,608.73x = 42,857.74 × 16,090.72
4. Step 4: Simplify right side
   28,608.73x = 689,611,807.14
5. Step 5: Solve for x
   x = 689,611,807.14/28,608.73
6. Step 6: Final answer
   x = 24,104.95