Finding the Fourth Proportional to 83,969.15, 125,986.55 and 31,366.35

Step by Step Solution

1. Step 1: Write the proportion equation
   83,969.15 : 125,986.55 = 31,366.35 : x
2. Step 2: Convert to fraction form
   83,969.15/125,986.55 = 31,366.35/x
3. Step 3: Cross multiply
   83,969.15x = 125,986.55 × 31,366.35
4. Step 4: Simplify right side
   83,969.15x = 3,951,738,065.76
5. Step 5: Solve for x
   x = 3,951,738,065.76/83,969.15
6. Step 6: Final answer
   x = 47,061.79