Finding the Fourth Proportional to 85,730.69, 118,309.31 and 47,490.83

Step by Step Solution

1. Step 1: Write the proportion equation
   85,730.69 : 118,309.31 = 47,490.83 : x
2. Step 2: Convert to fraction form
   85,730.69/118,309.31 = 47,490.83/x
3. Step 3: Cross multiply
   85,730.69x = 118,309.31 × 47,490.83
4. Step 4: Simplify right side
   85,730.69x = 5,618,606,499.63
5. Step 5: Solve for x
   x = 5,618,606,499.63/85,730.69
6. Step 6: Final answer
   x = 65,537.87