Finding the Fourth Proportional to 55,687.68, 76,848.06 and 31,488.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,687.68 : 76,848.06 = 31,488.25 : x
2. Step 2: Convert to fraction form
   55,687.68/76,848.06 = 31,488.25/x
3. Step 3: Cross multiply
   55,687.68x = 76,848.06 × 31,488.25
4. Step 4: Simplify right side
   55,687.68x = 2,419,810,925.30
5. Step 5: Solve for x
   x = 2,419,810,925.30/55,687.68
6. Step 6: Final answer
   x = 43,453.25