Finding the Fourth Proportional to 76,515.29, 105,584.34 and 42,521.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76,515.29 : 105,584.34 = 42,521.61 : x
2. Step 2: Convert to fraction form
   76,515.29/105,584.34 = 42,521.61/x
3. Step 3: Cross multiply
   76,515.29x = 105,584.34 × 42,521.61
4. Step 4: Simplify right side
   76,515.29x = 4,489,616,127.59
5. Step 5: Solve for x
   x = 4,489,616,127.59/76,515.29
6. Step 6: Final answer
   x = 58,676.06