Finding the Fourth Proportional to 52,211.34, 72,026.28 and 30,975.57

Step by Step Solution

1. Step 1: Write the proportion equation
   52,211.34 : 72,026.28 = 30,975.57 : x
2. Step 2: Convert to fraction form
   52,211.34/72,026.28 = 30,975.57/x
3. Step 3: Cross multiply
   52,211.34x = 72,026.28 × 30,975.57
4. Step 4: Simplify right side
   52,211.34x = 2,231,055,077.98
5. Step 5: Solve for x
   x = 2,231,055,077.98/52,211.34
6. Step 6: Final answer
   x = 42,731.24