Finding the Fourth Proportional to 78,321.62, 108,083.92 and 42,511.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,321.62 : 108,083.92 = 42,511.62 : x
2. Step 2: Convert to fraction form
   78,321.62/108,083.92 = 42,511.62/x
3. Step 3: Cross multiply
   78,321.62x = 108,083.92 × 42,511.62
4. Step 4: Simplify right side
   78,321.62x = 4,594,822,535.15
5. Step 5: Solve for x
   x = 4,594,822,535.15/78,321.62
6. Step 6: Final answer
   x = 58,666.08