Finding the Fourth Proportional to 76,105.44, 105,025.68 and 42,116.40

Step by Step Solution

1. Step 1: Write the proportion equation
   76,105.44 : 105,025.68 = 42,116.40 : x
2. Step 2: Convert to fraction form
   76,105.44/105,025.68 = 42,116.40/x
3. Step 3: Cross multiply
   76,105.44x = 105,025.68 × 42,116.40
4. Step 4: Simplify right side
   76,105.44x = 4,423,303,549.15
5. Step 5: Solve for x
   x = 4,423,303,549.15/76,105.44
6. Step 6: Final answer
   x = 58,120.73