Finding the Fourth Proportional to 76,749.52, 105,912.73 and 42,757.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,749.52 : 105,912.73 = 42,757.96 : x
2. Step 2: Convert to fraction form
   76,749.52/105,912.73 = 42,757.96/x
3. Step 3: Cross multiply
   76,749.52x = 105,912.73 × 42,757.96
4. Step 4: Simplify right side
   76,749.52x = 4,528,612,272.83
5. Step 5: Solve for x
   x = 4,528,612,272.83/76,749.52
6. Step 6: Final answer
   x = 59,005.09