Finding the Fourth Proportional to 85,143.31, 117,501.42 and 47,417.56

Step by Step Solution

1. Step 1: Write the proportion equation
   85,143.31 : 117,501.42 = 47,417.56 : x
2. Step 2: Convert to fraction form
   85,143.31/117,501.42 = 47,417.56/x
3. Step 3: Cross multiply
   85,143.31x = 117,501.42 × 47,417.56
4. Step 4: Simplify right side
   85,143.31x = 5,571,630,808.14
5. Step 5: Solve for x
   x = 5,571,630,808.14/85,143.31
6. Step 6: Final answer
   x = 65,438.27