Finding the Fourth Proportional to 78,147.84, 107,843.92 and 42,338

Step by Step Solution

1. Step 1: Write the proportion equation
   78,147.84 : 107,843.92 = 42,338 : x
2. Step 2: Convert to fraction form
   78,147.84/107,843.92 = 42,338/x
3. Step 3: Cross multiply
   78,147.84x = 107,843.92 × 42,338
4. Step 4: Simplify right side
   78,147.84x = 4,565,895,884.96
5. Step 5: Solve for x
   x = 4,565,895,884.96/78,147.84
6. Step 6: Final answer
   x = 58,426.39