Finding the Fourth Proportional to 112,196.44, 154,815.76 and 64,449.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,196.44 : 154,815.76 = 64,449.78 : x
2. Step 2: Convert to fraction form
   112,196.44/154,815.76 = 64,449.78/x
3. Step 3: Cross multiply
   112,196.44x = 154,815.76 × 64,449.78
4. Step 4: Simplify right side
   112,196.44x = 9,977,840,810.01
5. Step 5: Solve for x
   x = 9,977,840,810.01/112,196.44
6. Step 6: Final answer
   x = 88,931.88