Finding the Fourth Proportional to 55,691.78, 76,847.57 and 31,820.00

Step by Step Solution

1. Step 1: Write the proportion equation
   55,691.78 : 76,847.57 = 31,820.00 : x
2. Step 2: Convert to fraction form
   55,691.78/76,847.57 = 31,820.00/x
3. Step 3: Cross multiply
   55,691.78x = 76,847.57 × 31,820.00
4. Step 4: Simplify right side
   55,691.78x = 2,445,289,253.39
5. Step 5: Solve for x
   x = 2,445,289,253.39/55,691.78
6. Step 6: Final answer
   x = 43,907.55