Finding the Fourth Proportional to 82,752.80, 123,930.84 and 45,256.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,752.80 : 123,930.84 = 45,256.64 : x
2. Step 2: Convert to fraction form
   82,752.80/123,930.84 = 45,256.64/x
3. Step 3: Cross multiply
   82,752.80x = 123,930.84 × 45,256.64
4. Step 4: Simplify right side
   82,752.80x = 5,608,693,410.78
5. Step 5: Solve for x
   x = 5,608,693,410.78/82,752.80
6. Step 6: Final answer
   x = 67,776.48