Finding the Fourth Proportional to 77,321.89, 115,785.94 and 50,946.67

Step by Step Solution

1. Step 1: Write the proportion equation
   77,321.89 : 115,785.94 = 50,946.67 : x
2. Step 2: Convert to fraction form
   77,321.89/115,785.94 = 50,946.67/x
3. Step 3: Cross multiply
   77,321.89x = 115,785.94 × 50,946.67
4. Step 4: Simplify right side
   77,321.89x = 5,898,907,496.89
5. Step 5: Solve for x
   x = 5,898,907,496.89/77,321.89
6. Step 6: Final answer
   x = 76,290.27