Finding the Fourth Proportional to 72,838.72, 109,300.56 and 30,716.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,838.72 : 109,300.56 = 30,716.20 : x
2. Step 2: Convert to fraction form
   72,838.72/109,300.56 = 30,716.20/x
3. Step 3: Cross multiply
   72,838.72x = 109,300.56 × 30,716.20
4. Step 4: Simplify right side
   72,838.72x = 3,357,297,861.07
5. Step 5: Solve for x
   x = 3,357,297,861.07/72,838.72
6. Step 6: Final answer
   x = 46,092.21