Finding the Fourth Proportional to 152,142.49, 228,122.60 and 72,200.35

Step by Step Solution

1. Step 1: Write the proportion equation
   152,142.49 : 228,122.60 = 72,200.35 : x
2. Step 2: Convert to fraction form
   152,142.49/228,122.60 = 72,200.35/x
3. Step 3: Cross multiply
   152,142.49x = 228,122.60 × 72,200.35
4. Step 4: Simplify right side
   152,142.49x = 16,470,530,061.30
5. Step 5: Solve for x
   x = 16,470,530,061.30/152,142.49
6. Step 6: Final answer
   x = 108,257.27