Finding the Fourth Proportional to 64,746.78, 89,401.23 and 50,639.82

Step by Step Solution

1. Step 1: Write the proportion equation
   64,746.78 : 89,401.23 = 50,639.82 : x
2. Step 2: Convert to fraction form
   64,746.78/89,401.23 = 50,639.82/x
3. Step 3: Cross multiply
   64,746.78x = 89,401.23 × 50,639.82
4. Step 4: Simplify right side
   64,746.78x = 4,527,262,194.98
5. Step 5: Solve for x
   x = 4,527,262,194.98/64,746.78
6. Step 6: Final answer
   x = 69,922.58