Finding the Fourth Proportional to 105,289, 157,960.86 and 31,417

Step by Step Solution

1. Step 1: Write the proportion equation
   105,289 : 157,960.86 = 31,417 : x
2. Step 2: Convert to fraction form
   105,289/157,960.86 = 31,417/x
3. Step 3: Cross multiply
   105,289x = 157,960.86 × 31,417
4. Step 4: Simplify right side
   105,289x = 4,962,656,338.62
5. Step 5: Solve for x
   x = 4,962,656,338.62/105,289
6. Step 6: Final answer
   x = 47,133.66