Finding the Fourth Proportional to 42,681.79, 64,067.78 and 23,977.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,681.79 : 64,067.78 = 23,977.81 : x
2. Step 2: Convert to fraction form
   42,681.79/64,067.78 = 23,977.81/x
3. Step 3: Cross multiply
   42,681.79x = 64,067.78 × 23,977.81
4. Step 4: Simplify right side
   42,681.79x = 1,536,205,055.96
5. Step 5: Solve for x
   x = 1,536,205,055.96/42,681.79
6. Step 6: Final answer
   x = 35,992.05