Finding the Fourth Proportional to 85,388.88, 117,836.72 and 47,663.12

Step by Step Solution

1. Step 1: Write the proportion equation
   85,388.88 : 117,836.72 = 47,663.12 : x
2. Step 2: Convert to fraction form
   85,388.88/117,836.72 = 47,663.12/x
3. Step 3: Cross multiply
   85,388.88x = 117,836.72 × 47,663.12
4. Step 4: Simplify right side
   85,388.88x = 5,616,465,725.77
5. Step 5: Solve for x
   x = 5,616,465,725.77/85,388.88
6. Step 6: Final answer
   x = 65,775.14