Finding the Fourth Proportional to 85,116.42, 117,464.85 and 47,389.86

Step by Step Solution

1. Step 1: Write the proportion equation
   85,116.42 : 117,464.85 = 47,389.86 : x
2. Step 2: Convert to fraction form
   85,116.42/117,464.85 = 47,389.86/x
3. Step 3: Cross multiply
   85,116.42x = 117,464.85 × 47,389.86
4. Step 4: Simplify right side
   85,116.42x = 5,566,642,796.42
5. Step 5: Solve for x
   x = 5,566,642,796.42/85,116.42
6. Step 6: Final answer
   x = 65,400.34