Finding the Fourth Proportional to 52,315.40, 72,195.54 and 30,806.08

Step by Step Solution

1. Step 1: Write the proportion equation
   52,315.40 : 72,195.54 = 30,806.08 : x
2. Step 2: Convert to fraction form
   52,315.40/72,195.54 = 30,806.08/x
3. Step 3: Cross multiply
   52,315.40x = 72,195.54 × 30,806.08
4. Step 4: Simplify right side
   52,315.40x = 2,224,061,580.88
5. Step 5: Solve for x
   x = 2,224,061,580.88/52,315.40
6. Step 6: Final answer
   x = 42,512.56