Finding the Fourth Proportional to 132,731.72, 199,091.78 and 42,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   132,731.72 : 199,091.78 = 42,772.42 : x
2. Step 2: Convert to fraction form
   132,731.72/199,091.78 = 42,772.42/x
3. Step 3: Cross multiply
   132,731.72x = 199,091.78 × 42,772.42
4. Step 4: Simplify right side
   132,731.72x = 8,515,636,521.12
5. Step 5: Solve for x
   x = 8,515,636,521.12/132,731.72
6. Step 6: Final answer
   x = 64,156.76