Finding the Fourth Proportional to 56,945.25, 78,589.31 and 31,799.61

Step by Step Solution

1. Step 1: Write the proportion equation
   56,945.25 : 78,589.31 = 31,799.61 : x
2. Step 2: Convert to fraction form
   56,945.25/78,589.31 = 31,799.61/x
3. Step 3: Cross multiply
   56,945.25x = 78,589.31 × 31,799.61
4. Step 4: Simplify right side
   56,945.25x = 2,499,109,249.17
5. Step 5: Solve for x
   x = 2,499,109,249.17/56,945.25
6. Step 6: Final answer
   x = 43,886.18