Finding the Fourth Proportional to 111,834.72, 154,336.16 and 64,097.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111,834.72 : 154,336.16 = 64,097.28 : x
2. Step 2: Convert to fraction form
   111,834.72/154,336.16 = 64,097.28/x
3. Step 3: Cross multiply
   111,834.72x = 154,336.16 × 64,097.28
4. Step 4: Simplify right side
   111,834.72x = 9,892,528,061.64
5. Step 5: Solve for x
   x = 9,892,528,061.64/111,834.72
6. Step 6: Final answer
   x = 88,456.68