Finding the Fourth Proportional to 115,958.06, 159,985.86 and 64,963.94

Step by Step Solution

1. Step 1: Write the proportion equation
   115,958.06 : 159,985.86 = 64,963.94 : x
2. Step 2: Convert to fraction form
   115,958.06/159,985.86 = 64,963.94/x
3. Step 3: Cross multiply
   115,958.06x = 159,985.86 × 64,963.94
4. Step 4: Simplify right side
   115,958.06x = 10,393,311,809.89
5. Step 5: Solve for x
   x = 10,393,311,809.89/115,958.06
6. Step 6: Final answer
   x = 89,629.92