Finding the Fourth Proportional to 55,553.31, 76,669.74 and 31,685.85

Step by Step Solution

1. Step 1: Write the proportion equation
   55,553.31 : 76,669.74 = 31,685.85 : x
2. Step 2: Convert to fraction form
   55,553.31/76,669.74 = 31,685.85/x
3. Step 3: Cross multiply
   55,553.31x = 76,669.74 × 31,685.85
4. Step 4: Simplify right side
   55,553.31x = 2,429,345,881.18
5. Step 5: Solve for x
   x = 2,429,345,881.18/55,553.31
6. Step 6: Final answer
   x = 43,729.99