Finding the Fourth Proportional to 72,641.84, 108,969.01 and 20,051.33

Step by Step Solution

1. Step 1: Write the proportion equation
   72,641.84 : 108,969.01 = 20,051.33 : x
2. Step 2: Convert to fraction form
   72,641.84/108,969.01 = 20,051.33/x
3. Step 3: Cross multiply
   72,641.84x = 108,969.01 × 20,051.33
4. Step 4: Simplify right side
   72,641.84x = 2,184,972,984.31
5. Step 5: Solve for x
   x = 2,184,972,984.31/72,641.84
6. Step 6: Final answer
   x = 30,078.71