Finding the Fourth Proportional to 42,435.27, 63,660.69 and 13,973.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,435.27 : 63,660.69 = 13,973.85 : x
2. Step 2: Convert to fraction form
   42,435.27/63,660.69 = 13,973.85/x
3. Step 3: Cross multiply
   42,435.27x = 63,660.69 × 13,973.85
4. Step 4: Simplify right side
   42,435.27x = 889,584,932.96
5. Step 5: Solve for x
   x = 889,584,932.96/42,435.27
6. Step 6: Final answer
   x = 20,963.34