Finding the Fourth Proportional to 55,705.12, 83,632.56 and 55,117.60

Step by Step Solution

1. Step 1: Write the proportion equation
   55,705.12 : 83,632.56 = 55,117.60 : x
2. Step 2: Convert to fraction form
   55,705.12/83,632.56 = 55,117.60/x
3. Step 3: Cross multiply
   55,705.12x = 83,632.56 × 55,117.60
4. Step 4: Simplify right side
   55,705.12x = 4,609,625,989.06
5. Step 5: Solve for x
   x = 4,609,625,989.06/55,705.12
6. Step 6: Final answer
   x = 82,750.49