Finding the Fourth Proportional to 76,920.16, 106,149.81 and 42,464.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,920.16 : 106,149.81 = 42,464.89 : x
2. Step 2: Convert to fraction form
   76,920.16/106,149.81 = 42,464.89/x
3. Step 3: Cross multiply
   76,920.16x = 106,149.81 × 42,464.89
4. Step 4: Simplify right side
   76,920.16x = 4,507,640,005.17
5. Step 5: Solve for x
   x = 4,507,640,005.17/76,920.16
6. Step 6: Final answer
   x = 58,601.54