Finding the Fourth Proportional to 57,086.64, 78,777.61 and 31,594.08

Step by Step Solution

1. Step 1: Write the proportion equation
   57,086.64 : 78,777.61 = 31,594.08 : x
2. Step 2: Convert to fraction form
   57,086.64/78,777.61 = 31,594.08/x
3. Step 3: Cross multiply
   57,086.64x = 78,777.61 × 31,594.08
4. Step 4: Simplify right side
   57,086.64x = 2,488,906,112.55
5. Step 5: Solve for x
   x = 2,488,906,112.55/57,086.64
6. Step 6: Final answer
   x = 43,598.75