Finding the Fourth Proportional to 48,501, 72,689.81 and 21,818.46

Step by Step Solution

1. Step 1: Write the proportion equation
   48,501 : 72,689.81 = 21,818.46 : x
2. Step 2: Convert to fraction form
   48,501/72,689.81 = 21,818.46/x
3. Step 3: Cross multiply
   48,501x = 72,689.81 × 21,818.46
4. Step 4: Simplify right side
   48,501x = 1,585,979,711.89
5. Step 5: Solve for x
   x = 1,585,979,711.89/48,501
6. Step 6: Final answer
   x = 32,699.94