Finding the Fourth Proportional to 52,123.92, 71,929.24 and 30,890.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,123.92 : 71,929.24 = 30,890.60 : x
2. Step 2: Convert to fraction form
   52,123.92/71,929.24 = 30,890.60/x
3. Step 3: Cross multiply
   52,123.92x = 71,929.24 × 30,890.60
4. Step 4: Simplify right side
   52,123.92x = 2,221,937,381.14
5. Step 5: Solve for x
   x = 2,221,937,381.14/52,123.92
6. Step 6: Final answer
   x = 42,627.98