Finding the Fourth Proportional to 76,101.66, 105,017.58 and 42,109.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,101.66 : 105,017.58 = 42,109.56 : x
2. Step 2: Convert to fraction form
   76,101.66/105,017.58 = 42,109.56/x
3. Step 3: Cross multiply
   76,101.66x = 105,017.58 × 42,109.56
4. Step 4: Simplify right side
   76,101.66x = 4,422,244,086.06
5. Step 5: Solve for x
   x = 4,422,244,086.06/76,101.66
6. Step 6: Final answer
   x = 58,109.69