Finding the Fourth Proportional to 78,475.44, 108,299.25 and 42,665.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,475.44 : 108,299.25 = 42,665.34 : x
2. Step 2: Convert to fraction form
   78,475.44/108,299.25 = 42,665.34/x
3. Step 3: Cross multiply
   78,475.44x = 108,299.25 × 42,665.34
4. Step 4: Simplify right side
   78,475.44x = 4,620,624,323.00
5. Step 5: Solve for x
   x = 4,620,624,323.00/78,475.44
6. Step 6: Final answer
   x = 58,879.88