Finding the Fourth Proportional to 106,287.48, 159,376.32 and 31,398.12

Step by Step Solution

1. Step 1: Write the proportion equation
   106,287.48 : 159,376.32 = 31,398.12 : x
2. Step 2: Convert to fraction form
   106,287.48/159,376.32 = 31,398.12/x
3. Step 3: Cross multiply
   106,287.48x = 159,376.32 × 31,398.12
4. Step 4: Simplify right side
   106,287.48x = 5,004,116,820.52
5. Step 5: Solve for x
   x = 5,004,116,820.52/106,287.48
6. Step 6: Final answer
   x = 47,080.96