Finding the Fourth Proportional to 64,983.67, 89,626.50 and 42,329.79

Step by Step Solution

1. Step 1: Write the proportion equation
   64,983.67 : 89,626.50 = 42,329.79 : x
2. Step 2: Convert to fraction form
   64,983.67/89,626.50 = 42,329.79/x
3. Step 3: Cross multiply
   64,983.67x = 89,626.50 × 42,329.79
4. Step 4: Simplify right side
   64,983.67x = 3,793,870,923.44
5. Step 5: Solve for x
   x = 3,793,870,923.44/64,983.67
6. Step 6: Final answer
   x = 58,381.91