Finding the Fourth Proportional to 112,297.61, 154,996.72 and 64,578.49

Step by Step Solution

1. Step 1: Write the proportion equation
   112,297.61 : 154,996.72 = 64,578.49 : x
2. Step 2: Convert to fraction form
   112,297.61/154,996.72 = 64,578.49/x
3. Step 3: Cross multiply
   112,297.61x = 154,996.72 × 64,578.49
4. Step 4: Simplify right side
   112,297.61x = 10,009,453,583.61
5. Step 5: Solve for x
   x = 10,009,453,583.61/112,297.61
6. Step 6: Final answer
   x = 89,133.27