Finding the Fourth Proportional to 92,805.71, 139,029.48 and 55,395.72

Step by Step Solution

1. Step 1: Write the proportion equation
   92,805.71 : 139,029.48 = 55,395.72 : x
2. Step 2: Convert to fraction form
   92,805.71/139,029.48 = 55,395.72/x
3. Step 3: Cross multiply
   92,805.71x = 139,029.48 × 55,395.72
4. Step 4: Simplify right side
   92,805.71x = 7,701,638,145.83
5. Step 5: Solve for x
   x = 7,701,638,145.83/92,805.71
6. Step 6: Final answer
   x = 82,986.69