Finding the Fourth Proportional to 76,673.82, 105,816.27 and 42,688.76

Step by Step Solution

1. Step 1: Write the proportion equation
   76,673.82 : 105,816.27 = 42,688.76 : x
2. Step 2: Convert to fraction form
   76,673.82/105,816.27 = 42,688.76/x
3. Step 3: Cross multiply
   76,673.82x = 105,816.27 × 42,688.76
4. Step 4: Simplify right side
   76,673.82x = 4,517,164,985.13
5. Step 5: Solve for x
   x = 4,517,164,985.13/76,673.82
6. Step 6: Final answer
   x = 58,914.04