Finding the Fourth Proportional to 78,399.24, 108,191.70 and 42,589.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,399.24 : 108,191.70 = 42,589.52 : x
2. Step 2: Convert to fraction form
   78,399.24/108,191.70 = 42,589.52/x
3. Step 3: Cross multiply
   78,399.24x = 108,191.70 × 42,589.52
4. Step 4: Simplify right side
   78,399.24x = 4,607,832,570.98
5. Step 5: Solve for x
   x = 4,607,832,570.98/78,399.24
6. Step 6: Final answer
   x = 58,773.94