Finding the Fourth Proportional to 78,192, 107,904.96 and 42,864

Step by Step Solution

1. Step 1: Write the proportion equation
   78,192 : 107,904.96 = 42,864 : x
2. Step 2: Convert to fraction form
   78,192/107,904.96 = 42,864/x
3. Step 3: Cross multiply
   78,192x = 107,904.96 × 42,864
4. Step 4: Simplify right side
   78,192x = 4,625,238,205.44
5. Step 5: Solve for x
   x = 4,625,238,205.44/78,192
6. Step 6: Final answer
   x = 59,152.32