Finding the Fourth Proportional to 152,571.20, 228,818.52 and 72,559.80

Step by Step Solution

1. Step 1: Write the proportion equation
   152,571.20 : 228,818.52 = 72,559.80 : x
2. Step 2: Convert to fraction form
   152,571.20/228,818.52 = 72,559.80/x
3. Step 3: Cross multiply
   152,571.20x = 228,818.52 × 72,559.80
4. Step 4: Simplify right side
   152,571.20x = 16,603,026,047.50
5. Step 5: Solve for x
   x = 16,603,026,047.50/152,571.20
6. Step 6: Final answer
   x = 108,821.50