Finding the Fourth Proportional to 31,144.86, 42,980.22 and 16,997.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,144.86 : 42,980.22 = 16,997.94 : x
2. Step 2: Convert to fraction form
   31,144.86/42,980.22 = 16,997.94/x
3. Step 3: Cross multiply
   31,144.86x = 42,980.22 × 16,997.94
4. Step 4: Simplify right side
   31,144.86x = 730,575,200.75
5. Step 5: Solve for x
   x = 730,575,200.75/31,144.86
6. Step 6: Final answer
   x = 23,457.33