Finding the Fourth Proportional to 78,629.52, 108,507.72 and 42,819.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,629.52 : 108,507.72 = 42,819.12 : x
2. Step 2: Convert to fraction form
   78,629.52/108,507.72 = 42,819.12/x
3. Step 3: Cross multiply
   78,629.52x = 108,507.72 × 42,819.12
4. Step 4: Simplify right side
   78,629.52x = 4,646,205,083.61
5. Step 5: Solve for x
   x = 4,646,205,083.61/78,629.52
6. Step 6: Final answer
   x = 59,089.83