Finding the Fourth Proportional to 112,480.65, 155,223.41 and 64,743.30

Step by Step Solution

1. Step 1: Write the proportion equation
   112,480.65 : 155,223.41 = 64,743.30 : x
2. Step 2: Convert to fraction form
   112,480.65/155,223.41 = 64,743.30/x
3. Step 3: Cross multiply
   112,480.65x = 155,223.41 × 64,743.30
4. Step 4: Simplify right side
   112,480.65x = 10,049,675,476.94
5. Step 5: Solve for x
   x = 10,049,675,476.94/112,480.65
6. Step 6: Final answer
   x = 89,345.82