Finding the Fourth Proportional to 76,428.52, 105,481.04 and 42,894.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,428.52 : 105,481.04 = 42,894.52 : x
2. Step 2: Convert to fraction form
   76,428.52/105,481.04 = 42,894.52/x
3. Step 3: Cross multiply
   76,428.52x = 105,481.04 × 42,894.52
4. Step 4: Simplify right side
   76,428.52x = 4,524,558,579.90
5. Step 5: Solve for x
   x = 4,524,558,579.90/76,428.52
6. Step 6: Final answer
   x = 59,199.87