Finding the Fourth Proportional to 78,399.27, 108,192.15 and 42,589.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,399.27 : 108,192.15 = 42,589.98 : x
2. Step 2: Convert to fraction form
   78,399.27/108,192.15 = 42,589.98/x
3. Step 3: Cross multiply
   78,399.27x = 108,192.15 × 42,589.98
4. Step 4: Simplify right side
   78,399.27x = 4,607,901,504.66
5. Step 5: Solve for x
   x = 4,607,901,504.66/78,399.27
6. Step 6: Final answer
   x = 58,774.80