Finding the Fourth Proportional to 68,910.73, 103,227.69 and 31,419.23

Step by Step Solution

1. Step 1: Write the proportion equation
   68,910.73 : 103,227.69 = 31,419.23 : x
2. Step 2: Convert to fraction form
   68,910.73/103,227.69 = 31,419.23/x
3. Step 3: Cross multiply
   68,910.73x = 103,227.69 × 31,419.23
4. Step 4: Simplify right side
   68,910.73x = 3,243,334,018.34
5. Step 5: Solve for x
   x = 3,243,334,018.34/68,910.73
6. Step 6: Final answer
   x = 47,065.73