Finding the Fourth Proportional to 52,742.71, 72,786.95 and 30,085.39

Step by Step Solution

1. Step 1: Write the proportion equation
   52,742.71 : 72,786.95 = 30,085.39 : x
2. Step 2: Convert to fraction form
   52,742.71/72,786.95 = 30,085.39/x
3. Step 3: Cross multiply
   52,742.71x = 72,786.95 × 30,085.39
4. Step 4: Simplify right side
   52,742.71x = 2,189,823,809.20
5. Step 5: Solve for x
   x = 2,189,823,809.20/52,742.71
6. Step 6: Final answer
   x = 41,518.98