Finding the Fourth Proportional to 112,467.60, 155,200.56 and 64,722.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,467.60 : 155,200.56 = 64,722.60 : x
2. Step 2: Convert to fraction form
   112,467.60/155,200.56 = 64,722.60/x
3. Step 3: Cross multiply
   112,467.60x = 155,200.56 × 64,722.60
4. Step 4: Simplify right side
   112,467.60x = 10,044,983,764.66
5. Step 5: Solve for x
   x = 10,044,983,764.66/112,467.60
6. Step 6: Final answer
   x = 89,314.47