Finding the Fourth Proportional to 85,076.71, 127,694.01 and 42,986.35

Step by Step Solution

1. Step 1: Write the proportion equation
   85,076.71 : 127,694.01 = 42,986.35 : x
2. Step 2: Convert to fraction form
   85,076.71/127,694.01 = 42,986.35/x
3. Step 3: Cross multiply
   85,076.71x = 127,694.01 × 42,986.35
4. Step 4: Simplify right side
   85,076.71x = 5,489,099,406.76
5. Step 5: Solve for x
   x = 5,489,099,406.76/85,076.71
6. Step 6: Final answer
   x = 64,519.41