Finding the Fourth Proportional to 78,092.36, 107,767.30 and 42,282.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,092.36 : 107,767.30 = 42,282.40 : x
2. Step 2: Convert to fraction form
   78,092.36/107,767.30 = 42,282.40/x
3. Step 3: Cross multiply
   78,092.36x = 107,767.30 × 42,282.40
4. Step 4: Simplify right side
   78,092.36x = 4,556,660,085.52
5. Step 5: Solve for x
   x = 4,556,660,085.52/78,092.36
6. Step 6: Final answer
   x = 58,349.63