Finding the Fourth Proportional to 115,891.83, 159,903.32 and 65,590.83

Step by Step Solution

1. Step 1: Write the proportion equation
   115,891.83 : 159,903.32 = 65,590.83 : x
2. Step 2: Convert to fraction form
   115,891.83/159,903.32 = 65,590.83/x
3. Step 3: Cross multiply
   115,891.83x = 159,903.32 × 65,590.83
4. Step 4: Simplify right side
   115,891.83x = 10,488,191,150.60
5. Step 5: Solve for x
   x = 10,488,191,150.60/115,891.83
6. Step 6: Final answer
   x = 90,499.83