Finding the Fourth Proportional to 76,105.37, 105,021.70 and 42,113.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,105.37 : 105,021.70 = 42,113.25 : x
2. Step 2: Convert to fraction form
   76,105.37/105,021.70 = 42,113.25/x
3. Step 3: Cross multiply
   76,105.37x = 105,021.70 × 42,113.25
4. Step 4: Simplify right side
   76,105.37x = 4,422,805,002.24
5. Step 5: Solve for x
   x = 4,422,805,002.24/76,105.37
6. Step 6: Final answer
   x = 58,114.23