Finding the Fourth Proportional to 72,632.67, 108,955.28 and 20,042.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,632.67 : 108,955.28 = 20,042.15 : x
2. Step 2: Convert to fraction form
   72,632.67/108,955.28 = 20,042.15/x
3. Step 3: Cross multiply
   72,632.67x = 108,955.28 × 20,042.15
4. Step 4: Simplify right side
   72,632.67x = 2,183,698,070.52
5. Step 5: Solve for x
   x = 2,183,698,070.52/72,632.67
6. Step 6: Final answer
   x = 30,064.96