Finding the Fourth Proportional to 76,993.25, 106,240.18 and 42,997.40

Step by Step Solution

1. Step 1: Write the proportion equation
   76,993.25 : 106,240.18 = 42,997.40 : x
2. Step 2: Convert to fraction form
   76,993.25/106,240.18 = 42,997.40/x
3. Step 3: Cross multiply
   76,993.25x = 106,240.18 × 42,997.40
4. Step 4: Simplify right side
   76,993.25x = 4,568,050,769.34
5. Step 5: Solve for x
   x = 4,568,050,769.34/76,993.25
6. Step 6: Final answer
   x = 59,330.54