Finding the Fourth Proportional to 111,845.72, 154,353.48 and 64,107.02

Step by Step Solution

1. Step 1: Write the proportion equation
   111,845.72 : 154,353.48 = 64,107.02 : x
2. Step 2: Convert to fraction form
   111,845.72/154,353.48 = 64,107.02/x
3. Step 3: Cross multiply
   111,845.72x = 154,353.48 × 64,107.02
4. Step 4: Simplify right side
   111,845.72x = 9,895,141,629.43
5. Step 5: Solve for x
   x = 9,895,141,629.43/111,845.72
6. Step 6: Final answer
   x = 88,471.35