Finding the Fourth Proportional to 76,545.98, 105,625.17 and 42,555.92

Step by Step Solution

1. Step 1: Write the proportion equation
   76,545.98 : 105,625.17 = 42,555.92 : x
2. Step 2: Convert to fraction form
   76,545.98/105,625.17 = 42,555.92/x
3. Step 3: Cross multiply
   76,545.98x = 105,625.17 × 42,555.92
4. Step 4: Simplify right side
   76,545.98x = 4,494,976,284.51
5. Step 5: Solve for x
   x = 4,494,976,284.51/76,545.98
6. Step 6: Final answer
   x = 58,722.56