Finding the Fourth Proportional to 83,628.22, 115,402.72 and 49,638.19

Step by Step Solution

1. Step 1: Write the proportion equation
   83,628.22 : 115,402.72 = 49,638.19 : x
2. Step 2: Convert to fraction form
   83,628.22/115,402.72 = 49,638.19/x
3. Step 3: Cross multiply
   83,628.22x = 115,402.72 × 49,638.19
4. Step 4: Simplify right side
   83,628.22x = 5,728,382,141.88
5. Step 5: Solve for x
   x = 5,728,382,141.88/83,628.22
6. Step 6: Final answer
   x = 68,498.20