Finding the Fourth Proportional to 64,321.56, 96,491.67 and 19,951.89

Step by Step Solution

1. Step 1: Write the proportion equation
   64,321.56 : 96,491.67 = 19,951.89 : x
2. Step 2: Convert to fraction form
   64,321.56/96,491.67 = 19,951.89/x
3. Step 3: Cross multiply
   64,321.56x = 96,491.67 × 19,951.89
4. Step 4: Simplify right side
   64,321.56x = 1,925,191,185.76
5. Step 5: Solve for x
   x = 1,925,191,185.76/64,321.56
6. Step 6: Final answer
   x = 29,930.73