Finding the Fourth Proportional to 76,285.15, 105,279.72 and 42,304.28

Step by Step Solution

1. Step 1: Write the proportion equation
   76,285.15 : 105,279.72 = 42,304.28 : x
2. Step 2: Convert to fraction form
   76,285.15/105,279.72 = 42,304.28/x
3. Step 3: Cross multiply
   76,285.15x = 105,279.72 × 42,304.28
4. Step 4: Simplify right side
   76,285.15x = 4,453,782,753.20
5. Step 5: Solve for x
   x = 4,453,782,753.20/76,285.15
6. Step 6: Final answer
   x = 58,383.35