Finding the Fourth Proportional to 76,178.93, 105,112.01 and 42,185.77

Step by Step Solution

1. Step 1: Write the proportion equation
   76,178.93 : 105,112.01 = 42,185.77 : x
2. Step 2: Convert to fraction form
   76,178.93/105,112.01 = 42,185.77/x
3. Step 3: Cross multiply
   76,178.93x = 105,112.01 × 42,185.77
4. Step 4: Simplify right side
   76,178.93x = 4,434,231,235.41
5. Step 5: Solve for x
   x = 4,434,231,235.41/76,178.93
6. Step 6: Final answer
   x = 58,208.11