Finding the Fourth Proportional to 92,713.64, 139,083.72 and 28,676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   92,713.64 : 139,083.72 = 28,676.72 : x
2. Step 2: Convert to fraction form
   92,713.64/139,083.72 = 28,676.72/x
3. Step 3: Cross multiply
   92,713.64x = 139,083.72 × 28,676.72
4. Step 4: Simplify right side
   92,713.64x = 3,988,464,895.00
5. Step 5: Solve for x
   x = 3,988,464,895.00/92,713.64
6. Step 6: Final answer
   x = 43,019.18