Finding the Fourth Proportional to 85,106.48, 127,738.60 and 43,015.89

Step by Step Solution

1. Step 1: Write the proportion equation
   85,106.48 : 127,738.60 = 43,015.89 : x
2. Step 2: Convert to fraction form
   85,106.48/127,738.60 = 43,015.89/x
3. Step 3: Cross multiply
   85,106.48x = 127,738.60 × 43,015.89
4. Step 4: Simplify right side
   85,106.48x = 5,494,790,179.80
5. Step 5: Solve for x
   x = 5,494,790,179.80/85,106.48
6. Step 6: Final answer
   x = 64,563.71