Finding the Fourth Proportional to 108,785.90, 163,066.59 and 45,642.69

Step by Step Solution

1. Step 1: Write the proportion equation
   108,785.90 : 163,066.59 = 45,642.69 : x
2. Step 2: Convert to fraction form
   108,785.90/163,066.59 = 45,642.69/x
3. Step 3: Cross multiply
   108,785.90x = 163,066.59 × 45,642.69
4. Step 4: Simplify right side
   108,785.90x = 7,442,797,816.73
5. Step 5: Solve for x
   x = 7,442,797,816.73/108,785.90
6. Step 6: Final answer
   x = 68,416.93