Finding the Fourth Proportional to 78,388.37, 108,174.15 and 42,577.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,388.37 : 108,174.15 = 42,577.62 : x
2. Step 2: Convert to fraction form
   78,388.37/108,174.15 = 42,577.62/x
3. Step 3: Cross multiply
   78,388.37x = 108,174.15 × 42,577.62
4. Step 4: Simplify right side
   78,388.37x = 4,605,797,852.52
5. Step 5: Solve for x
   x = 4,605,797,852.52/78,388.37
6. Step 6: Final answer
   x = 58,756.14