Finding the Fourth Proportional to 76,105.50, 105,025.59 and 42,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,105.50 : 105,025.59 = 42,571.50 : x
2. Step 2: Convert to fraction form
   76,105.50/105,025.59 = 42,571.50/x
3. Step 3: Cross multiply
   76,105.50x = 105,025.59 × 42,571.50
4. Step 4: Simplify right side
   76,105.50x = 4,471,096,904.69
5. Step 5: Solve for x
   x = 4,471,096,904.69/76,105.50
6. Step 6: Final answer
   x = 58,748.67