Finding the Fourth Proportional to 81,985.02, 113,139.54 and 47,987.34

Step by Step Solution

1. Step 1: Write the proportion equation
   81,985.02 : 113,139.54 = 47,987.34 : x
2. Step 2: Convert to fraction form
   81,985.02/113,139.54 = 47,987.34/x
3. Step 3: Cross multiply
   81,985.02x = 113,139.54 × 47,987.34
4. Step 4: Simplify right side
   81,985.02x = 5,429,265,573.42
5. Step 5: Solve for x
   x = 5,429,265,573.42/81,985.02
6. Step 6: Final answer
   x = 66,222.65