Finding the Fourth Proportional to 78,673.78, 108,569.82 and 42,863.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,673.78 : 108,569.82 = 42,863.78 : x
2. Step 2: Convert to fraction form
   78,673.78/108,569.82 = 42,863.78/x
3. Step 3: Cross multiply
   78,673.78x = 108,569.82 × 42,863.78
4. Step 4: Simplify right side
   78,673.78x = 4,653,713,070.17
5. Step 5: Solve for x
   x = 4,653,713,070.17/78,673.78
6. Step 6: Final answer
   x = 59,152.02