Finding the Fourth Proportional to 72,491.56, 108,743.42 and 30,938.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,491.56 : 108,743.42 = 30,938.92 : x
2. Step 2: Convert to fraction form
   72,491.56/108,743.42 = 30,938.92/x
3. Step 3: Cross multiply
   72,491.56x = 108,743.42 × 30,938.92
4. Step 4: Simplify right side
   72,491.56x = 3,364,403,971.91
5. Step 5: Solve for x
   x = 3,364,403,971.91/72,491.56
6. Step 6: Final answer
   x = 46,410.97