Finding the Fourth Proportional to 72,892.28, 109,353.26 and 30,772.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,892.28 : 109,353.26 = 30,772.38 : x
2. Step 2: Convert to fraction form
   72,892.28/109,353.26 = 30,772.38/x
3. Step 3: Cross multiply
   72,892.28x = 109,353.26 × 30,772.38
4. Step 4: Simplify right side
   72,892.28x = 3,365,059,917.10
5. Step 5: Solve for x
   x = 3,365,059,917.10/72,892.28
6. Step 6: Final answer
   x = 46,164.83