Finding the Fourth Proportional to 30,813.12, 42,522.10 and 16,665.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,813.12 : 42,522.10 = 16,665.96 : x
2. Step 2: Convert to fraction form
   30,813.12/42,522.10 = 16,665.96/x
3. Step 3: Cross multiply
   30,813.12x = 42,522.10 × 16,665.96
4. Step 4: Simplify right side
   30,813.12x = 708,671,617.72
5. Step 5: Solve for x
   x = 708,671,617.72/30,813.12
6. Step 6: Final answer
   x = 22,999.02