Finding the Fourth Proportional to 85,411, 117,867.72 and 47,685.52

Step by Step Solution

1. Step 1: Write the proportion equation
   85,411 : 117,867.72 = 47,685.52 : x
2. Step 2: Convert to fraction form
   85,411/117,867.72 = 47,685.52/x
3. Step 3: Cross multiply
   85,411x = 117,867.72 × 47,685.52
4. Step 4: Simplify right side
   85,411x = 5,620,583,519.41
5. Step 5: Solve for x
   x = 5,620,583,519.41/85,411
6. Step 6: Final answer
   x = 65,806.32