Finding the Fourth Proportional to 83,891.62, 125,859.21 and 31,301.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,891.62 : 125,859.21 = 31,301.50 : x
2. Step 2: Convert to fraction form
   83,891.62/125,859.21 = 31,301.50/x
3. Step 3: Cross multiply
   83,891.62x = 125,859.21 × 31,301.50
4. Step 4: Simplify right side
   83,891.62x = 3,939,582,061.82
5. Step 5: Solve for x
   x = 3,939,582,061.82/83,891.62
6. Step 6: Final answer
   x = 46,960.38