Finding the Fourth Proportional to 92,648.12, 139,158.16 and 55,281.12

Step by Step Solution

1. Step 1: Write the proportion equation
   92,648.12 : 139,158.16 = 55,281.12 : x
2. Step 2: Convert to fraction form
   92,648.12/139,158.16 = 55,281.12/x
3. Step 3: Cross multiply
   92,648.12x = 139,158.16 × 55,281.12
4. Step 4: Simplify right side
   92,648.12x = 7,692,818,941.94
5. Step 5: Solve for x
   x = 7,692,818,941.94/92,648.12
6. Step 6: Final answer
   x = 83,032.65