Finding the Fourth Proportional to 83,931.36, 115,810.56 and 50,398.08

Step by Step Solution

1. Step 1: Write the proportion equation
   83,931.36 : 115,810.56 = 50,398.08 : x
2. Step 2: Convert to fraction form
   83,931.36/115,810.56 = 50,398.08/x
3. Step 3: Cross multiply
   83,931.36x = 115,810.56 × 50,398.08
4. Step 4: Simplify right side
   83,931.36x = 5,836,629,867.72
5. Step 5: Solve for x
   x = 5,836,629,867.72/83,931.36
6. Step 6: Final answer
   x = 69,540.51