Finding the Fourth Proportional to 52,786.50, 72,846.02 and 30,128.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,786.50 : 72,846.02 = 30,128.60 : x
2. Step 2: Convert to fraction form
   52,786.50/72,846.02 = 30,128.60/x
3. Step 3: Cross multiply
   52,786.50x = 72,846.02 × 30,128.60
4. Step 4: Simplify right side
   52,786.50x = 2,194,748,598.17
5. Step 5: Solve for x
   x = 2,194,748,598.17/52,786.50
6. Step 6: Final answer
   x = 41,577.84