Finding the Fourth Proportional to 56,067.72, 77,372.88 and 30,574.04

Step by Step Solution

1. Step 1: Write the proportion equation
   56,067.72 : 77,372.88 = 30,574.04 : x
2. Step 2: Convert to fraction form
   56,067.72/77,372.88 = 30,574.04/x
3. Step 3: Cross multiply
   56,067.72x = 77,372.88 × 30,574.04
4. Step 4: Simplify right side
   56,067.72x = 2,365,601,528.04
5. Step 5: Solve for x
   x = 2,365,601,528.04/56,067.72
6. Step 6: Final answer
   x = 42,191.86