Finding the Fourth Proportional to 112,452.96, 155,180.72 and 64,721.68

Step by Step Solution

1. Step 1: Write the proportion equation
   112,452.96 : 155,180.72 = 64,721.68 : x
2. Step 2: Convert to fraction form
   112,452.96/155,180.72 = 64,721.68/x
3. Step 3: Cross multiply
   112,452.96x = 155,180.72 × 64,721.68
4. Step 4: Simplify right side
   112,452.96x = 10,043,556,902.01
5. Step 5: Solve for x
   x = 10,043,556,902.01/112,452.96
6. Step 6: Final answer
   x = 89,313.41