Finding the Fourth Proportional to 86,118.42, 118,847.46 and 47,878.59

Step by Step Solution

1. Step 1: Write the proportion equation
   86,118.42 : 118,847.46 = 47,878.59 : x
2. Step 2: Convert to fraction form
   86,118.42/118,847.46 = 47,878.59/x
3. Step 3: Cross multiply
   86,118.42x = 118,847.46 × 47,878.59
4. Step 4: Simplify right side
   86,118.42x = 5,690,248,809.88
5. Step 5: Solve for x
   x = 5,690,248,809.88/86,118.42
6. Step 6: Final answer
   x = 66,074.70