Finding the Fourth Proportional to 52,123.10, 71,915.90 and 30,884.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,123.10 : 71,915.90 = 30,884.78 : x
2. Step 2: Convert to fraction form
   52,123.10/71,915.90 = 30,884.78/x
3. Step 3: Cross multiply
   52,123.10x = 71,915.90 × 30,884.78
4. Step 4: Simplify right side
   52,123.10x = 2,221,106,750.00
5. Step 5: Solve for x
   x = 2,221,106,750.00/52,123.10
6. Step 6: Final answer
   x = 42,612.71