Finding the Fourth Proportional to 85,556.47, 118,068.20 and 47,830.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,556.47 : 118,068.20 = 47,830.72 : x
2. Step 2: Convert to fraction form
   85,556.47/118,068.20 = 47,830.72/x
3. Step 3: Cross multiply
   85,556.47x = 118,068.20 × 47,830.72
4. Step 4: Simplify right side
   85,556.47x = 5,647,287,015.10
5. Step 5: Solve for x
   x = 5,647,287,015.10/85,556.47
6. Step 6: Final answer
   x = 66,006.55