Finding the Fourth Proportional to 76,108.50, 105,029.73 and 42,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,108.50 : 105,029.73 = 42,574.50 : x
2. Step 2: Convert to fraction form
   76,108.50/105,029.73 = 42,574.50/x
3. Step 3: Cross multiply
   76,108.50x = 105,029.73 × 42,574.50
4. Step 4: Simplify right side
   76,108.50x = 4,471,588,239.89
5. Step 5: Solve for x
   x = 4,471,588,239.89/76,108.50
6. Step 6: Final answer
   x = 58,752.81