Finding the Fourth Proportional to 85,456.77, 117,906.35 and 49,156.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,456.77 : 117,906.35 = 49,156.31 : x
2. Step 2: Convert to fraction form
   85,456.77/117,906.35 = 49,156.31/x
3. Step 3: Cross multiply
   85,456.77x = 117,906.35 × 49,156.31
4. Step 4: Simplify right side
   85,456.77x = 5,795,841,140.55
5. Step 5: Solve for x
   x = 5,795,841,140.55/85,456.77
6. Step 6: Final answer
   x = 67,821.91