Finding the Fourth Proportional to 152,142.99, 228,123.34 and 72,200.85

Step by Step Solution

1. Step 1: Write the proportion equation
   152,142.99 : 228,123.34 = 72,200.85 : x
2. Step 2: Convert to fraction form
   152,142.99/228,123.34 = 72,200.85/x
3. Step 3: Cross multiply
   152,142.99x = 228,123.34 × 72,200.85
4. Step 4: Simplify right side
   152,142.99x = 16,470,699,052.84
5. Step 5: Solve for x
   x = 16,470,699,052.84/152,142.99
6. Step 6: Final answer
   x = 108,258.02