Finding the Fourth Proportional to 76,134.75, 105,063.32 and 42,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,134.75 : 105,063.32 = 42,144.72 : x
2. Step 2: Convert to fraction form
   76,134.75/105,063.32 = 42,144.72/x
3. Step 3: Cross multiply
   76,134.75x = 105,063.32 × 42,144.72
4. Step 4: Simplify right side
   76,134.75x = 4,427,863,992.95
5. Step 5: Solve for x
   x = 4,427,863,992.95/76,134.75
6. Step 6: Final answer
   x = 58,158.25