Finding the Fourth Proportional to 30,836.03, 42,553.72 and 16,688.87

Step by Step Solution

1. Step 1: Write the proportion equation
   30,836.03 : 42,553.72 = 16,688.87 : x
2. Step 2: Convert to fraction form
   30,836.03/42,553.72 = 16,688.87/x
3. Step 3: Cross multiply
   30,836.03x = 42,553.72 × 16,688.87
4. Step 4: Simplify right side
   30,836.03x = 710,173,501.10
5. Step 5: Solve for x
   x = 710,173,501.10/30,836.03
6. Step 6: Final answer
   x = 23,030.64