Finding the Fourth Proportional to 77,078.28, 106,365.78 and 43,086.83

Step by Step Solution

1. Step 1: Write the proportion equation
   77,078.28 : 106,365.78 = 43,086.83 : x
2. Step 2: Convert to fraction form
   77,078.28/106,365.78 = 43,086.83/x
3. Step 3: Cross multiply
   77,078.28x = 106,365.78 × 43,086.83
4. Step 4: Simplify right side
   77,078.28x = 4,582,963,748.85
5. Step 5: Solve for x
   x = 4,582,963,748.85/77,078.28
6. Step 6: Final answer
   x = 59,458.56