Finding the Fourth Proportional to 75,499.25, 113,165.79 and 31,101.78

Step by Step Solution

1. Step 1: Write the proportion equation
   75,499.25 : 113,165.79 = 31,101.78 : x
2. Step 2: Convert to fraction form
   75,499.25/113,165.79 = 31,101.78/x
3. Step 3: Cross multiply
   75,499.25x = 113,165.79 × 31,101.78
4. Step 4: Simplify right side
   75,499.25x = 3,519,657,986.79
5. Step 5: Solve for x
   x = 3,519,657,986.79/75,499.25
6. Step 6: Final answer
   x = 46,618.45