Finding the Fourth Proportional to 49,431.25, 68,218.77 and 30,572.02

Step by Step Solution

1. Step 1: Write the proportion equation
   49,431.25 : 68,218.77 = 30,572.02 : x
2. Step 2: Convert to fraction form
   49,431.25/68,218.77 = 30,572.02/x
3. Step 3: Cross multiply
   49,431.25x = 68,218.77 × 30,572.02
4. Step 4: Simplify right side
   49,431.25x = 2,085,585,600.82
5. Step 5: Solve for x
   x = 2,085,585,600.82/49,431.25
6. Step 6: Final answer
   x = 42,191.64