Finding the Fourth Proportional to 78,097.67, 107,774.25 and 42,286.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,097.67 : 107,774.25 = 42,286.86 : x
2. Step 2: Convert to fraction form
   78,097.67/107,774.25 = 42,286.86/x
3. Step 3: Cross multiply
   78,097.67x = 107,774.25 × 42,286.86
4. Step 4: Simplify right side
   78,097.67x = 4,557,434,462.78
5. Step 5: Solve for x
   x = 4,557,434,462.78/78,097.67
6. Step 6: Final answer
   x = 58,355.58