Finding the Fourth Proportional to 78,598.29, 108,465.61 and 42,788.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,598.29 : 108,465.61 = 42,788.29 : x
2. Step 2: Convert to fraction form
   78,598.29/108,465.61 = 42,788.29/x
3. Step 3: Cross multiply
   78,598.29x = 108,465.61 × 42,788.29
4. Step 4: Simplify right side
   78,598.29x = 4,641,057,608.30
5. Step 5: Solve for x
   x = 4,641,057,608.30/78,598.29
6. Step 6: Final answer
   x = 59,047.82