Finding the Fourth Proportional to 78,399.76, 108,190.52 and 42,590.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,399.76 : 108,190.52 = 42,590.24 : x
2. Step 2: Convert to fraction form
   78,399.76/108,190.52 = 42,590.24/x
3. Step 3: Cross multiply
   78,399.76x = 108,190.52 × 42,590.24
4. Step 4: Simplify right side
   78,399.76x = 4,607,860,212.52
5. Step 5: Solve for x
   x = 4,607,860,212.52/78,399.76
6. Step 6: Final answer
   x = 58,773.91