Finding the Fourth Proportional to 78,707.37, 108,612.99 and 42,896.61

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.37 : 108,612.99 = 42,896.61 : x
2. Step 2: Convert to fraction form
   78,707.37/108,612.99 = 42,896.61/x
3. Step 3: Cross multiply
   78,707.37x = 108,612.99 × 42,896.61
4. Step 4: Simplify right side
   78,707.37x = 4,659,129,072.96
5. Step 5: Solve for x
   x = 4,659,129,072.96/78,707.37
6. Step 6: Final answer
   x = 59,195.59