Finding the Fourth Proportional to 42,124.50, 63,205.20 and 19,953.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,124.50 : 63,205.20 = 19,953.72 : x
2. Step 2: Convert to fraction form
   42,124.50/63,205.20 = 19,953.72/x
3. Step 3: Cross multiply
   42,124.50x = 63,205.20 × 19,953.72
4. Step 4: Simplify right side
   42,124.50x = 1,261,178,863.34
5. Step 5: Solve for x
   x = 1,261,178,863.34/42,124.50
6. Step 6: Final answer
   x = 29,939.32