Finding the Fourth Proportional to 78,613.99, 108,489.25 and 42,805.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,613.99 : 108,489.25 = 42,805.96 : x
2. Step 2: Convert to fraction form
   78,613.99/108,489.25 = 42,805.96/x
3. Step 3: Cross multiply
   78,613.99x = 108,489.25 × 42,805.96
4. Step 4: Simplify right side
   78,613.99x = 4,643,986,495.93
5. Step 5: Solve for x
   x = 4,643,986,495.93/78,613.99
6. Step 6: Final answer
   x = 59,073.28