Finding the Fourth Proportional to 83,615.28, 115,389.10 and 50,081.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83,615.28 : 115,389.10 = 50,081.28 : x
2. Step 2: Convert to fraction form
   83,615.28/115,389.10 = 50,081.28/x
3. Step 3: Cross multiply
   83,615.28x = 115,389.10 × 50,081.28
4. Step 4: Simplify right side
   83,615.28x = 5,778,833,826.05
5. Step 5: Solve for x
   x = 5,778,833,826.05/83,615.28
6. Step 6: Final answer
   x = 69,112.17