Finding the Fourth Proportional to 85,081.06, 117,410.70 and 47,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,081.06 : 117,410.70 = 47,355.31 : x
2. Step 2: Convert to fraction form
   85,081.06/117,410.70 = 47,355.31/x
3. Step 3: Cross multiply
   85,081.06x = 117,410.70 × 47,355.31
4. Step 4: Simplify right side
   85,081.06x = 5,560,020,095.82
5. Step 5: Solve for x
   x = 5,560,020,095.82/85,081.06
6. Step 6: Final answer
   x = 65,349.68