Finding the Fourth Proportional to 57,840.78, 79,796.75 and 37,690.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,840.78 : 79,796.75 = 37,690.31 : x
2. Step 2: Convert to fraction form
   57,840.78/79,796.75 = 37,690.31/x
3. Step 3: Cross multiply
   57,840.78x = 79,796.75 × 37,690.31
4. Step 4: Simplify right side
   57,840.78x = 3,007,564,255.53
5. Step 5: Solve for x
   x = 3,007,564,255.53/57,840.78
6. Step 6: Final answer
   x = 51,997.29