Finding the Fourth Proportional to 76,753.70, 105,912.87 and 42,758.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,753.70 : 105,912.87 = 42,758.72 : x
2. Step 2: Convert to fraction form
   76,753.70/105,912.87 = 42,758.72/x
3. Step 3: Cross multiply
   76,753.70x = 105,912.87 × 42,758.72
4. Step 4: Simplify right side
   76,753.70x = 4,528,698,752.73
5. Step 5: Solve for x
   x = 4,528,698,752.73/76,753.70
6. Step 6: Final answer
   x = 59,003.00