Finding the Fourth Proportional to 85,215.12, 117,596.88 and 47,496.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,215.12 : 117,596.88 = 47,496.72 : x
2. Step 2: Convert to fraction form
   85,215.12/117,596.88 = 47,496.72/x
3. Step 3: Cross multiply
   85,215.12x = 117,596.88 × 47,496.72
4. Step 4: Simplify right side
   85,215.12x = 5,585,466,082.23
5. Step 5: Solve for x
   x = 5,585,466,082.23/85,215.12
6. Step 6: Final answer
   x = 65,545.48