Finding the Fourth Proportional to 85,411.22, 117,867.56 and 47,685.47

Step by Step Solution

1. Step 1: Write the proportion equation
   85,411.22 : 117,867.56 = 47,685.47 : x
2. Step 2: Convert to fraction form
   85,411.22/117,867.56 = 47,685.47/x
3. Step 3: Cross multiply
   85,411.22x = 117,867.56 × 47,685.47
4. Step 4: Simplify right side
   85,411.22x = 5,620,569,168.59
5. Step 5: Solve for x
   x = 5,620,569,168.59/85,411.22
6. Step 6: Final answer
   x = 65,805.99