Finding the Fourth Proportional to 93,862.72, 140,805.83 and 30,689.20

Step by Step Solution

1. Step 1: Write the proportion equation
   93,862.72 : 140,805.83 = 30,689.20 : x
2. Step 2: Convert to fraction form
   93,862.72/140,805.83 = 30,689.20/x
3. Step 3: Cross multiply
   93,862.72x = 140,805.83 × 30,689.20
4. Step 4: Simplify right side
   93,862.72x = 4,321,218,278.04
5. Step 5: Solve for x
   x = 4,321,218,278.04/93,862.72
6. Step 6: Final answer
   x = 46,037.64