Finding the Fourth Proportional to 112,464.18, 155,217.60 and 64,714.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,464.18 : 155,217.60 = 64,714.32 : x
2. Step 2: Convert to fraction form
   112,464.18/155,217.60 = 64,714.32/x
3. Step 3: Cross multiply
   112,464.18x = 155,217.60 × 64,714.32
4. Step 4: Simplify right side
   112,464.18x = 10,044,801,436.03
5. Step 5: Solve for x
   x = 10,044,801,436.03/112,464.18
6. Step 6: Final answer
   x = 89,315.56