Finding the Fourth Proportional to 72,300.24, 107,969.22 and 71,518.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,300.24 : 107,969.22 = 71,518.32 : x
2. Step 2: Convert to fraction form
   72,300.24/107,969.22 = 71,518.32/x
3. Step 3: Cross multiply
   72,300.24x = 107,969.22 × 71,518.32
4. Step 4: Simplify right side
   72,300.24x = 7,721,777,226.11
5. Step 5: Solve for x
   x = 7,721,777,226.11/72,300.24
6. Step 6: Final answer
   x = 106,801.54