Finding the Fourth Proportional to 52,921.96, 73,020.78 and 30,553

Step by Step Solution

1. Step 1: Write the proportion equation
   52,921.96 : 73,020.78 = 30,553 : x
2. Step 2: Convert to fraction form
   52,921.96/73,020.78 = 30,553/x
3. Step 3: Cross multiply
   52,921.96x = 73,020.78 × 30,553
4. Step 4: Simplify right side
   52,921.96x = 2,231,003,891.34
5. Step 5: Solve for x
   x = 2,231,003,891.34/52,921.96
6. Step 6: Final answer
   x = 42,156.49