Finding the Fourth Proportional to 42,961.48, 64,462.73 and 20,762.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,961.48 : 64,462.73 = 20,762.52 : x
2. Step 2: Convert to fraction form
   42,961.48/64,462.73 = 20,762.52/x
3. Step 3: Cross multiply
   42,961.48x = 64,462.73 × 20,762.52
4. Step 4: Simplify right side
   42,961.48x = 1,338,408,375.33
5. Step 5: Solve for x
   x = 1,338,408,375.33/42,961.48
6. Step 6: Final answer
   x = 31,153.69