Finding the Fourth Proportional to 105,824.48, 146,037.36 and 57,426.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,824.48 : 146,037.36 = 57,426.60 : x
2. Step 2: Convert to fraction form
   105,824.48/146,037.36 = 57,426.60/x
3. Step 3: Cross multiply
   105,824.48x = 146,037.36 × 57,426.60
4. Step 4: Simplify right side
   105,824.48x = 8,386,429,820.77
5. Step 5: Solve for x
   x = 8,386,429,820.77/105,824.48
6. Step 6: Final answer
   x = 79,248.49