Finding the Fourth Proportional to 31,623.34, 43,642.16 and 18,194.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,623.34 : 43,642.16 = 18,194.30 : x
2. Step 2: Convert to fraction form
   31,623.34/43,642.16 = 18,194.30/x
3. Step 3: Cross multiply
   31,623.34x = 43,642.16 × 18,194.30
4. Step 4: Simplify right side
   31,623.34x = 794,038,551.69
5. Step 5: Solve for x
   x = 794,038,551.69/31,623.34
6. Step 6: Final answer
   x = 25,109.26