Finding the Fourth Proportional to 52,388.30, 72,320.22 and 30,871.26

Step by Step Solution

1. Step 1: Write the proportion equation
   52,388.30 : 72,320.22 = 30,871.26 : x
2. Step 2: Convert to fraction form
   52,388.30/72,320.22 = 30,871.26/x
3. Step 3: Cross multiply
   52,388.30x = 72,320.22 × 30,871.26
4. Step 4: Simplify right side
   52,388.30x = 2,232,616,314.88
5. Step 5: Solve for x
   x = 2,232,616,314.88/52,388.30
6. Step 6: Final answer
   x = 42,616.70