Finding the Fourth Proportional to 82,405.29, 113,721.53 and 50,555.28

Step by Step Solution

1. Step 1: Write the proportion equation
   82,405.29 : 113,721.53 = 50,555.28 : x
2. Step 2: Convert to fraction form
   82,405.29/113,721.53 = 50,555.28/x
3. Step 3: Cross multiply
   82,405.29x = 113,721.53 × 50,555.28
4. Step 4: Simplify right side
   82,405.29x = 5,749,223,538.40
5. Step 5: Solve for x
   x = 5,749,223,538.40/82,405.29
6. Step 6: Final answer
   x = 69,767.65