Finding the Fourth Proportional to 76,587.61, 105,689.96 and 43,053.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76,587.61 : 105,689.96 = 43,053.61 : x
2. Step 2: Convert to fraction form
   76,587.61/105,689.96 = 43,053.61/x
3. Step 3: Cross multiply
   76,587.61x = 105,689.96 × 43,053.61
4. Step 4: Simplify right side
   76,587.61x = 4,550,333,839.26
5. Step 5: Solve for x
   x = 4,550,333,839.26/76,587.61
6. Step 6: Final answer
   x = 59,413.45