Finding the Fourth Proportional to 118,230.69, 163,162.28 and 64,518.65

Step by Step Solution

1. Step 1: Write the proportion equation
   118,230.69 : 163,162.28 = 64,518.65 : x
2. Step 2: Convert to fraction form
   118,230.69/163,162.28 = 64,518.65/x
3. Step 3: Cross multiply
   118,230.69x = 163,162.28 × 64,518.65
4. Step 4: Simplify right side
   118,230.69x = 10,527,010,036.52
5. Step 5: Solve for x
   x = 10,527,010,036.52/118,230.69
6. Step 6: Final answer
   x = 89,037.88