Finding the Fourth Proportional to 78,429.92, 108,233.06 and 42,619.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,429.92 : 108,233.06 = 42,619.94 : x
2. Step 2: Convert to fraction form
   78,429.92/108,233.06 = 42,619.94/x
3. Step 3: Cross multiply
   78,429.92x = 108,233.06 × 42,619.94
4. Step 4: Simplify right side
   78,429.92x = 4,612,886,523.22
5. Step 5: Solve for x
   x = 4,612,886,523.22/78,429.92
6. Step 6: Final answer
   x = 58,815.39