Finding the Fourth Proportional to 78,078.16, 107,747.90 and 42,268.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,078.16 : 107,747.90 = 42,268.17 : x
2. Step 2: Convert to fraction form
   78,078.16/107,747.90 = 42,268.17/x
3. Step 3: Cross multiply
   78,078.16x = 107,747.90 × 42,268.17
4. Step 4: Simplify right side
   78,078.16x = 4,554,306,554.34
5. Step 5: Solve for x
   x = 4,554,306,554.34/78,078.16
6. Step 6: Final answer
   x = 58,330.10