Finding the Fourth Proportional to 76,494.42, 105,573.72 and 55,055.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,494.42 : 105,573.72 = 55,055.10 : x
2. Step 2: Convert to fraction form
   76,494.42/105,573.72 = 55,055.10/x
3. Step 3: Cross multiply
   76,494.42x = 105,573.72 × 55,055.10
4. Step 4: Simplify right side
   76,494.42x = 5,812,371,711.97
5. Step 5: Solve for x
   x = 5,812,371,711.97/76,494.42
6. Step 6: Final answer
   x = 75,984.26