Finding the Fourth Proportional to 72,025.72, 99,390.56 and 39,758.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,025.72 : 99,390.56 = 39,758.82 : x
2. Step 2: Convert to fraction form
   72,025.72/99,390.56 = 39,758.82/x
3. Step 3: Cross multiply
   72,025.72x = 99,390.56 × 39,758.82
4. Step 4: Simplify right side
   72,025.72x = 3,951,651,384.74
5. Step 5: Solve for x
   x = 3,951,651,384.74/72,025.72
6. Step 6: Final answer
   x = 54,864.45