Finding the Fourth Proportional to 57,105.15, 85,642.06 and 31,773.47

Step by Step Solution

1. Step 1: Write the proportion equation
   57,105.15 : 85,642.06 = 31,773.47 : x
2. Step 2: Convert to fraction form
   57,105.15/85,642.06 = 31,773.47/x
3. Step 3: Cross multiply
   57,105.15x = 85,642.06 × 31,773.47
4. Step 4: Simplify right side
   57,105.15x = 2,721,144,976.08
5. Step 5: Solve for x
   x = 2,721,144,976.08/57,105.15
6. Step 6: Final answer
   x = 47,651.48