Finding the Fourth Proportional to 31,096.67, 42,938.73 and 25,355.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.67 : 42,938.73 = 25,355.07 : x
2. Step 2: Convert to fraction form
   31,096.67/42,938.73 = 25,355.07/x
3. Step 3: Cross multiply
   31,096.67x = 42,938.73 × 25,355.07
4. Step 4: Simplify right side
   31,096.67x = 1,088,714,504.86
5. Step 5: Solve for x
   x = 1,088,714,504.86/31,096.67
6. Step 6: Final answer
   x = 35,010.65