Finding the Fourth Proportional to 85,105.28, 127,736.75 and 43,015.10

Step by Step Solution

1. Step 1: Write the proportion equation
   85,105.28 : 127,736.75 = 43,015.10 : x
2. Step 2: Convert to fraction form
   85,105.28/127,736.75 = 43,015.10/x
3. Step 3: Cross multiply
   85,105.28x = 127,736.75 × 43,015.10
4. Step 4: Simplify right side
   85,105.28x = 5,494,609,020.34
5. Step 5: Solve for x
   x = 5,494,609,020.34/85,105.28
6. Step 6: Final answer
   x = 64,562.49