Finding the Fourth Proportional to 77,131.97, 106,441.33 and 43,140.37

Step by Step Solution

1. Step 1: Write the proportion equation
   77,131.97 : 106,441.33 = 43,140.37 : x
2. Step 2: Convert to fraction form
   77,131.97/106,441.33 = 43,140.37/x
3. Step 3: Cross multiply
   77,131.97x = 106,441.33 × 43,140.37
4. Step 4: Simplify right side
   77,131.97x = 4,591,918,704.72
5. Step 5: Solve for x
   x = 4,591,918,704.72/77,131.97
6. Step 6: Final answer
   x = 59,533.27