Finding the Fourth Proportional to 42,715.82, 58,975.55 and 38,231.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,715.82 : 58,975.55 = 38,231.79 : x
2. Step 2: Convert to fraction form
   42,715.82/58,975.55 = 38,231.79/x
3. Step 3: Cross multiply
   42,715.82x = 58,975.55 × 38,231.79
4. Step 4: Simplify right side
   42,715.82x = 2,254,740,651.58
5. Step 5: Solve for x
   x = 2,254,740,651.58/42,715.82
6. Step 6: Final answer
   x = 52,784.68