Finding the Fourth Proportional to 72,931.48, 109,440.27 and 30,808.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,931.48 : 109,440.27 = 30,808.83 : x
2. Step 2: Convert to fraction form
   72,931.48/109,440.27 = 30,808.83/x
3. Step 3: Cross multiply
   72,931.48x = 109,440.27 × 30,808.83
4. Step 4: Simplify right side
   72,931.48x = 3,371,726,673.58
5. Step 5: Solve for x
   x = 3,371,726,673.58/72,931.48
6. Step 6: Final answer
   x = 46,231.43