Finding the Fourth Proportional to 81,863.75, 122,598.63 and 55,488.53

Step by Step Solution

1. Step 1: Write the proportion equation
   81,863.75 : 122,598.63 = 55,488.53 : x
2. Step 2: Convert to fraction form
   81,863.75/122,598.63 = 55,488.53/x
3. Step 3: Cross multiply
   81,863.75x = 122,598.63 × 55,488.53
4. Step 4: Simplify right side
   81,863.75x = 6,802,817,145.72
5. Step 5: Solve for x
   x = 6,802,817,145.72/81,863.75
6. Step 6: Final answer
   x = 83,099.27