Finding the Fourth Proportional to 112,367.56, 155,098.50 and 64,636.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,367.56 : 155,098.50 = 64,636.28 : x
2. Step 2: Convert to fraction form
   112,367.56/155,098.50 = 64,636.28/x
3. Step 3: Cross multiply
   112,367.56x = 155,098.50 × 64,636.28
4. Step 4: Simplify right side
   112,367.56x = 10,024,990,073.58
5. Step 5: Solve for x
   x = 10,024,990,073.58/112,367.56
6. Step 6: Final answer
   x = 89,216.06