Finding the Fourth Proportional to 77,179.42, 106,405.50 and 55,651.15

Step by Step Solution

1. Step 1: Write the proportion equation
   77,179.42 : 106,405.50 = 55,651.15 : x
2. Step 2: Convert to fraction form
   77,179.42/106,405.50 = 55,651.15/x
3. Step 3: Cross multiply
   77,179.42x = 106,405.50 × 55,651.15
4. Step 4: Simplify right side
   77,179.42x = 5,921,588,441.33
5. Step 5: Solve for x
   x = 5,921,588,441.33/77,179.42
6. Step 6: Final answer
   x = 76,724.97