Finding the Fourth Proportional to 52,786.02, 72,845.31 and 30,128.07

Step by Step Solution

1. Step 1: Write the proportion equation
   52,786.02 : 72,845.31 = 30,128.07 : x
2. Step 2: Convert to fraction form
   52,786.02/72,845.31 = 30,128.07/x
3. Step 3: Cross multiply
   52,786.02x = 72,845.31 × 30,128.07
4. Step 4: Simplify right side
   52,786.02x = 2,194,688,598.85
5. Step 5: Solve for x
   x = 2,194,688,598.85/52,786.02
6. Step 6: Final answer
   x = 41,577.08