Finding the Fourth Proportional to 76,144.59, 105,078.06 and 42,153.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,144.59 : 105,078.06 = 42,153.08 : x
2. Step 2: Convert to fraction form
   76,144.59/105,078.06 = 42,153.08/x
3. Step 3: Cross multiply
   76,144.59x = 105,078.06 × 42,153.08
4. Step 4: Simplify right side
   76,144.59x = 4,429,363,344.03
5. Step 5: Solve for x
   x = 4,429,363,344.03/76,144.59
6. Step 6: Final answer
   x = 58,170.43