Finding the Fourth Proportional to 30,553.86, 42,160.05 and 17,124.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,553.86 : 42,160.05 = 17,124.06 : x
2. Step 2: Convert to fraction form
   30,553.86/42,160.05 = 17,124.06/x
3. Step 3: Cross multiply
   30,553.86x = 42,160.05 × 17,124.06
4. Step 4: Simplify right side
   30,553.86x = 721,951,225.80
5. Step 5: Solve for x
   x = 721,951,225.80/30,553.86
6. Step 6: Final answer
   x = 23,628.81