Finding the Fourth Proportional to 72,663.45, 108,997.25 and 20,072.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,663.45 : 108,997.25 = 20,072.94 : x
2. Step 2: Convert to fraction form
   72,663.45/108,997.25 = 20,072.94/x
3. Step 3: Cross multiply
   72,663.45x = 108,997.25 × 20,072.94
4. Step 4: Simplify right side
   72,663.45x = 2,187,895,159.05
5. Step 5: Solve for x
   x = 2,187,895,159.05/72,663.45
6. Step 6: Final answer
   x = 30,109.98