Finding the Fourth Proportional to 107,321.78, 148,170.84 and 83,078.89

Step by Step Solution

1. Step 1: Write the proportion equation
   107,321.78 : 148,170.84 = 83,078.89 : x
2. Step 2: Convert to fraction form
   107,321.78/148,170.84 = 83,078.89/x
3. Step 3: Cross multiply
   107,321.78x = 148,170.84 × 83,078.89
4. Step 4: Simplify right side
   107,321.78x = 12,309,868,235.59
5. Step 5: Solve for x
   x = 12,309,868,235.59/107,321.78
6. Step 6: Final answer
   x = 114,700.56