Finding the Fourth Proportional to 108,499.62, 162,798.57 and 64,212.78

Step by Step Solution

1. Step 1: Write the proportion equation
   108,499.62 : 162,798.57 = 64,212.78 : x
2. Step 2: Convert to fraction form
   108,499.62/162,798.57 = 64,212.78/x
3. Step 3: Cross multiply
   108,499.62x = 162,798.57 × 64,212.78
4. Step 4: Simplify right side
   108,499.62x = 10,453,748,759.72
5. Step 5: Solve for x
   x = 10,453,748,759.72/108,499.62
6. Step 6: Final answer
   x = 96,348.25