Finding the Fourth Proportional to 76,483.28, 105,488.52 and 55,332.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,483.28 : 105,488.52 = 55,332.56 : x
2. Step 2: Convert to fraction form
   76,483.28/105,488.52 = 55,332.56/x
3. Step 3: Cross multiply
   76,483.28x = 105,488.52 × 55,332.56
4. Step 4: Simplify right side
   76,483.28x = 5,836,949,862.21
5. Step 5: Solve for x
   x = 5,836,949,862.21/76,483.28
6. Step 6: Final answer
   x = 76,316.68