Finding the Fourth Proportional to 115,782.51, 159,782.73 and 64,794.83

Step by Step Solution

1. Step 1: Write the proportion equation
   115,782.51 : 159,782.73 = 64,794.83 : x
2. Step 2: Convert to fraction form
   115,782.51/159,782.73 = 64,794.83/x
3. Step 3: Cross multiply
   115,782.51x = 159,782.73 × 64,794.83
4. Step 4: Simplify right side
   115,782.51x = 10,353,094,981.85
5. Step 5: Solve for x
   x = 10,353,094,981.85/115,782.51
6. Step 6: Final answer
   x = 89,418.47