Finding the Fourth Proportional to 85,530.24, 118,029.42 and 47,811.78

Step by Step Solution

1. Step 1: Write the proportion equation
   85,530.24 : 118,029.42 = 47,811.78 : x
2. Step 2: Convert to fraction form
   85,530.24/118,029.42 = 47,811.78/x
3. Step 3: Cross multiply
   85,530.24x = 118,029.42 × 47,811.78
4. Step 4: Simplify right side
   85,530.24x = 5,643,196,662.57
5. Step 5: Solve for x
   x = 5,643,196,662.57/85,530.24
6. Step 6: Final answer
   x = 65,978.96