Finding the Fourth Proportional to 76,766.52, 105,796.08 and 55,508.88

Step by Step Solution

1. Step 1: Write the proportion equation
   76,766.52 : 105,796.08 = 55,508.88 : x
2. Step 2: Convert to fraction form
   76,766.52/105,796.08 = 55,508.88/x
3. Step 3: Cross multiply
   76,766.52x = 105,796.08 × 55,508.88
4. Step 4: Simplify right side
   76,766.52x = 5,872,621,909.19
5. Step 5: Solve for x
   x = 5,872,621,909.19/76,766.52
6. Step 6: Final answer
   x = 76,499.78