Finding the Fourth Proportional to 115,784.50, 159,782.61 and 65,482.42

Step by Step Solution

1. Step 1: Write the proportion equation
   115,784.50 : 159,782.61 = 65,482.42 : x
2. Step 2: Convert to fraction form
   115,784.50/159,782.61 = 65,482.42/x
3. Step 3: Cross multiply
   115,784.50x = 159,782.61 × 65,482.42
4. Step 4: Simplify right side
   115,784.50x = 10,462,951,976.72
5. Step 5: Solve for x
   x = 10,462,951,976.72/115,784.50
6. Step 6: Final answer
   x = 90,365.74