Finding the Fourth Proportional to 81,411.82, 112,361.82 and 55,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   81,411.82 : 112,361.82 = 55,897.30 : x
2. Step 2: Convert to fraction form
   81,411.82/112,361.82 = 55,897.30/x
3. Step 3: Cross multiply
   81,411.82x = 112,361.82 × 55,897.30
4. Step 4: Simplify right side
   81,411.82x = 6,280,722,361.09
5. Step 5: Solve for x
   x = 6,280,722,361.09/81,411.82
6. Step 6: Final answer
   x = 77,147.55