Finding the Fourth Proportional to 48,391.02, 72,614.34 and 20,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,391.02 : 72,614.34 = 20,308.50 : x
2. Step 2: Convert to fraction form
   48,391.02/72,614.34 = 20,308.50/x
3. Step 3: Cross multiply
   48,391.02x = 72,614.34 × 20,308.50
4. Step 4: Simplify right side
   48,391.02x = 1,474,688,323.89
5. Step 5: Solve for x
   x = 1,474,688,323.89/48,391.02
6. Step 6: Final answer
   x = 30,474.42