Finding the Fourth Proportional to 72,651.68, 108,983.76 and 20,061.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,651.68 : 108,983.76 = 20,061.16 : x
2. Step 2: Convert to fraction form
   72,651.68/108,983.76 = 20,061.16/x
3. Step 3: Cross multiply
   72,651.68x = 108,983.76 × 20,061.16
4. Step 4: Simplify right side
   72,651.68x = 2,186,340,646.76
5. Step 5: Solve for x
   x = 2,186,340,646.76/72,651.68
6. Step 6: Final answer
   x = 30,093.46