Finding the Fourth Proportional to 80,913.81, 111,615.32 and 50,646.59

Step by Step Solution

1. Step 1: Write the proportion equation
   80,913.81 : 111,615.32 = 50,646.59 : x
2. Step 2: Convert to fraction form
   80,913.81/111,615.32 = 50,646.59/x
3. Step 3: Cross multiply
   80,913.81x = 111,615.32 × 50,646.59
4. Step 4: Simplify right side
   80,913.81x = 5,652,934,538.45
5. Step 5: Solve for x
   x = 5,652,934,538.45/80,913.81
6. Step 6: Final answer
   x = 69,863.66