Finding the Fourth Proportional to 78,091.89, 107,766.34 and 42,281.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,091.89 : 107,766.34 = 42,281.14 : x
2. Step 2: Convert to fraction form
   78,091.89/107,766.34 = 42,281.14/x
3. Step 3: Cross multiply
   78,091.89x = 107,766.34 × 42,281.14
4. Step 4: Simplify right side
   78,091.89x = 4,556,483,708.83
5. Step 5: Solve for x
   x = 4,556,483,708.83/78,091.89
6. Step 6: Final answer
   x = 58,347.72