Finding the Fourth Proportional to 78,142.97, 107,836.86 and 42,333.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,142.97 : 107,836.86 = 42,333.68 : x
2. Step 2: Convert to fraction form
   78,142.97/107,836.86 = 42,333.68/x
3. Step 3: Cross multiply
   78,142.97x = 107,836.86 × 42,333.68
4. Step 4: Simplify right side
   78,142.97x = 4,565,131,123.44
5. Step 5: Solve for x
   x = 4,565,131,123.44/78,142.97
6. Step 6: Final answer
   x = 58,420.24