Finding the Fourth Proportional to 76,920.03, 106,149.59 and 43,386.03

Step by Step Solution

1. Step 1: Write the proportion equation
   76,920.03 : 106,149.59 = 43,386.03 : x
2. Step 2: Convert to fraction form
   76,920.03/106,149.59 = 43,386.03/x
3. Step 3: Cross multiply
   76,920.03x = 106,149.59 × 43,386.03
4. Step 4: Simplify right side
   76,920.03x = 4,605,409,079.30
5. Step 5: Solve for x
   x = 4,605,409,079.30/76,920.03
6. Step 6: Final answer
   x = 59,872.69