Finding the Fourth Proportional to 52,128.55, 71,935.64 and 30,895.21

Step by Step Solution

1. Step 1: Write the proportion equation
   52,128.55 : 71,935.64 = 30,895.21 : x
2. Step 2: Convert to fraction form
   52,128.55/71,935.64 = 30,895.21/x
3. Step 3: Cross multiply
   52,128.55x = 71,935.64 × 30,895.21
4. Step 4: Simplify right side
   52,128.55x = 2,222,466,344.61
5. Step 5: Solve for x
   x = 2,222,466,344.61/52,128.55
6. Step 6: Final answer
   x = 42,634.34