Finding the Fourth Proportional to 72,231.89, 108,394.61 and 38,974.91

Step by Step Solution

1. Step 1: Write the proportion equation
   72,231.89 : 108,394.61 = 38,974.91 : x
2. Step 2: Convert to fraction form
   72,231.89/108,394.61 = 38,974.91/x
3. Step 3: Cross multiply
   72,231.89x = 108,394.61 × 38,974.91
4. Step 4: Simplify right side
   72,231.89x = 4,224,669,432.39
5. Step 5: Solve for x
   x = 4,224,669,432.39/72,231.89
6. Step 6: Final answer
   x = 58,487.60