Finding the Fourth Proportional to 72,906.82, 100,611.42 and 39,372.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,906.82 : 100,611.42 = 39,372.82 : x
2. Step 2: Convert to fraction form
   72,906.82/100,611.42 = 39,372.82/x
3. Step 3: Cross multiply
   72,906.82x = 100,611.42 × 39,372.82
4. Step 4: Simplify right side
   72,906.82x = 3,961,354,930.43
5. Step 5: Solve for x
   x = 3,961,354,930.43/72,906.82
6. Step 6: Final answer
   x = 54,334.49