Finding the Fourth Proportional to 78,092.40, 107,766.24 and 42,282.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,092.40 : 107,766.24 = 42,282.12 : x
2. Step 2: Convert to fraction form
   78,092.40/107,766.24 = 42,282.12/x
3. Step 3: Cross multiply
   78,092.40x = 107,766.24 × 42,282.12
4. Step 4: Simplify right side
   78,092.40x = 4,556,585,091.63
5. Step 5: Solve for x
   x = 4,556,585,091.63/78,092.40
6. Step 6: Final answer
   x = 58,348.64