Finding the Fourth Proportional to 105,043.32, 157,564.90 and 31,171.32

Step by Step Solution

1. Step 1: Write the proportion equation
   105,043.32 : 157,564.90 = 31,171.32 : x
2. Step 2: Convert to fraction form
   105,043.32/157,564.90 = 31,171.32/x
3. Step 3: Cross multiply
   105,043.32x = 157,564.90 × 31,171.32
4. Step 4: Simplify right side
   105,043.32x = 4,911,505,918.67
5. Step 5: Solve for x
   x = 4,911,505,918.67/105,043.32
6. Step 6: Final answer
   x = 46,756.96