Finding the Fourth Proportional to 72,656.16, 108,984.06 and 20,065.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,656.16 : 108,984.06 = 20,065.49 : x
2. Step 2: Convert to fraction form
   72,656.16/108,984.06 = 20,065.49/x
3. Step 3: Cross multiply
   72,656.16x = 108,984.06 × 20,065.49
4. Step 4: Simplify right side
   72,656.16x = 2,186,818,021.17
5. Step 5: Solve for x
   x = 2,186,818,021.17/72,656.16
6. Step 6: Final answer
   x = 30,098.18