Finding the Fourth Proportional to 76,727.61, 105,883.77 and 42,736.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,727.61 : 105,883.77 = 42,736.50 : x
2. Step 2: Convert to fraction form
   76,727.61/105,883.77 = 42,736.50/x
3. Step 3: Cross multiply
   76,727.61x = 105,883.77 × 42,736.50
4. Step 4: Simplify right side
   76,727.61x = 4,525,101,736.61
5. Step 5: Solve for x
   x = 4,525,101,736.61/76,727.61
6. Step 6: Final answer
   x = 58,976.19