Finding the Fourth Proportional to 78,707.39, 108,613.01 and 42,896.61

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.39 : 108,613.01 = 42,896.61 : x
2. Step 2: Convert to fraction form
   78,707.39/108,613.01 = 42,896.61/x
3. Step 3: Cross multiply
   78,707.39x = 108,613.01 × 42,896.61
4. Step 4: Simplify right side
   78,707.39x = 4,659,129,716.41
5. Step 5: Solve for x
   x = 4,659,129,716.41/78,707.39
6. Step 6: Final answer
   x = 59,195.59