Finding the Fourth Proportional to 83,128.98, 114,760.77 and 49,147.86

Step by Step Solution

1. Step 1: Write the proportion equation
   83,128.98 : 114,760.77 = 49,147.86 : x
2. Step 2: Convert to fraction form
   83,128.98/114,760.77 = 49,147.86/x
3. Step 3: Cross multiply
   83,128.98x = 114,760.77 × 49,147.86
4. Step 4: Simplify right side
   83,128.98x = 5,640,246,257.45
5. Step 5: Solve for x
   x = 5,640,246,257.45/83,128.98
6. Step 6: Final answer
   x = 67,849.34