Finding the Fourth Proportional to 81,103.78, 111,915.52 and 47,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   81,103.78 : 111,915.52 = 47,111.34 : x
2. Step 2: Convert to fraction form
   81,103.78/111,915.52 = 47,111.34/x
3. Step 3: Cross multiply
   81,103.78x = 111,915.52 × 47,111.34
4. Step 4: Simplify right side
   81,103.78x = 5,272,490,051.38
5. Step 5: Solve for x
   x = 5,272,490,051.38/81,103.78
6. Step 6: Final answer
   x = 65,009.18