Finding the Fourth Proportional to 76,458.08, 105,513.56 and 42,469.71

Step by Step Solution

1. Step 1: Write the proportion equation
   76,458.08 : 105,513.56 = 42,469.71 : x
2. Step 2: Convert to fraction form
   76,458.08/105,513.56 = 42,469.71/x
3. Step 3: Cross multiply
   76,458.08x = 105,513.56 × 42,469.71
4. Step 4: Simplify right side
   76,458.08x = 4,481,130,081.92
5. Step 5: Solve for x
   x = 4,481,130,081.92/76,458.08
6. Step 6: Final answer
   x = 58,608.98