Finding the Fourth Proportional to 85,641.18, 118,185.12 and 47,913

Step by Step Solution

1. Step 1: Write the proportion equation
   85,641.18 : 118,185.12 = 47,913 : x
2. Step 2: Convert to fraction form
   85,641.18/118,185.12 = 47,913/x
3. Step 3: Cross multiply
   85,641.18x = 118,185.12 × 47,913
4. Step 4: Simplify right side
   85,641.18x = 5,662,603,654.56
5. Step 5: Solve for x
   x = 5,662,603,654.56/85,641.18
6. Step 6: Final answer
   x = 66,120.10