Finding the Fourth Proportional to 112,396.32, 155,106.72 and 64,648.44

Step by Step Solution

1. Step 1: Write the proportion equation
   112,396.32 : 155,106.72 = 64,648.44 : x
2. Step 2: Convert to fraction form
   112,396.32/155,106.72 = 64,648.44/x
3. Step 3: Cross multiply
   112,396.32x = 155,106.72 × 64,648.44
4. Step 4: Simplify right side
   112,396.32x = 10,027,407,481.52
5. Step 5: Solve for x
   x = 10,027,407,481.52/112,396.32
6. Step 6: Final answer
   x = 89,214.73