Finding the Fourth Proportional to 76,683, 105,822.54 and 43,149.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,683 : 105,822.54 = 43,149.72 : x
2. Step 2: Convert to fraction form
   76,683/105,822.54 = 43,149.72/x
3. Step 3: Cross multiply
   76,683x = 105,822.54 × 43,149.72
4. Step 4: Simplify right side
   76,683x = 4,566,212,970.69
5. Step 5: Solve for x
   x = 4,566,212,970.69/76,683
6. Step 6: Final answer
   x = 59,546.61