Finding the Fourth Proportional to 111,993,853.44, 154,552,178.32 and 64,978,921.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,993,853.44 : 154,552,178.32 = 64,978,921.10 : x
2. Step 2: Convert to fraction form
   111,993,853.44/154,552,178.32 = 64,978,921.10/x
3. Step 3: Cross multiply
   111,993,853.44x = 154,552,178.32 × 64,978,921.10
4. Step 4: Simplify right side
   111,993,853.44x = 10,042,633,800,888,410
5. Step 5: Solve for x
   x = 10,042,633,800,888,410/111,993,853.44
6. Step 6: Final answer
   x = 89,671,294.38