Finding the Fourth Proportional to 64,196.72, 96,258.02 and 19,811.55

Step by Step Solution

1. Step 1: Write the proportion equation
   64,196.72 : 96,258.02 = 19,811.55 : x
2. Step 2: Convert to fraction form
   64,196.72/96,258.02 = 19,811.55/x
3. Step 3: Cross multiply
   64,196.72x = 96,258.02 × 19,811.55
4. Step 4: Simplify right side
   64,196.72x = 1,907,020,477.07
5. Step 5: Solve for x
   x = 1,907,020,477.07/64,196.72
6. Step 6: Final answer
   x = 29,705.89