Finding the Fourth Proportional to 77,179.55, 106,405.67 and 55,651.28

Step by Step Solution

1. Step 1: Write the proportion equation
   77,179.55 : 106,405.67 = 55,651.28 : x
2. Step 2: Convert to fraction form
   77,179.55/106,405.67 = 55,651.28/x
3. Step 3: Cross multiply
   77,179.55x = 106,405.67 × 55,651.28
4. Step 4: Simplify right side
   77,179.55x = 5,921,611,341.86
5. Step 5: Solve for x
   x = 5,921,611,341.86/77,179.55
6. Step 6: Final answer
   x = 76,725.14