Finding the Fourth Proportional to 85,072.71, 127,688.01 and 42,982.35

Step by Step Solution

1. Step 1: Write the proportion equation
   85,072.71 : 127,688.01 = 42,982.35 : x
2. Step 2: Convert to fraction form
   85,072.71/127,688.01 = 42,982.35/x
3. Step 3: Cross multiply
   85,072.71x = 127,688.01 × 42,982.35
4. Step 4: Simplify right side
   85,072.71x = 5,488,330,521.71
5. Step 5: Solve for x
   x = 5,488,330,521.71/85,072.71
6. Step 6: Final answer
   x = 64,513.41