Finding the Fourth Proportional to 105,634.46, 145,774.71 and 57,887.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,634.46 : 145,774.71 = 57,887.69 : x
2. Step 2: Convert to fraction form
   105,634.46/145,774.71 = 57,887.69/x
3. Step 3: Cross multiply
   105,634.46x = 145,774.71 × 57,887.69
4. Step 4: Simplify right side
   105,634.46x = 8,438,560,493.45
5. Step 5: Solve for x
   x = 8,438,560,493.45/105,634.46
6. Step 6: Final answer
   x = 79,884.54