Finding the Fourth Proportional to 52,889.96, 72,976.74 and 30,521

Step by Step Solution

1. Step 1: Write the proportion equation
   52,889.96 : 72,976.74 = 30,521 : x
2. Step 2: Convert to fraction form
   52,889.96/72,976.74 = 30,521/x
3. Step 3: Cross multiply
   52,889.96x = 72,976.74 × 30,521
4. Step 4: Simplify right side
   52,889.96x = 2,227,323,081.54
5. Step 5: Solve for x
   x = 2,227,323,081.54/52,889.96
6. Step 6: Final answer
   x = 42,112.40