Finding the Fourth Proportional to 83,997.45, 115,891.70 and 49,978.67

Step by Step Solution

1. Step 1: Write the proportion equation
   83,997.45 : 115,891.70 = 49,978.67 : x
2. Step 2: Convert to fraction form
   83,997.45/115,891.70 = 49,978.67/x
3. Step 3: Cross multiply
   83,997.45x = 115,891.70 × 49,978.67
4. Step 4: Simplify right side
   83,997.45x = 5,792,112,200.69
5. Step 5: Solve for x
   x = 5,792,112,200.69/83,997.45
6. Step 6: Final answer
   x = 68,955.81