Finding the Fourth Proportional to 64,097.72, 96,155.69 and 19,728.17

Step by Step Solution

1. Step 1: Write the proportion equation
   64,097.72 : 96,155.69 = 19,728.17 : x
2. Step 2: Convert to fraction form
   64,097.72/96,155.69 = 19,728.17/x
3. Step 3: Cross multiply
   64,097.72x = 96,155.69 × 19,728.17
4. Step 4: Simplify right side
   64,097.72x = 1,896,975,219.37
5. Step 5: Solve for x
   x = 1,896,975,219.37/64,097.72
6. Step 6: Final answer
   x = 29,595.05