Finding the Fourth Proportional to 56,441.32, 77,889.12 and 31,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,441.32 : 77,889.12 = 31,290.82 : x
2. Step 2: Convert to fraction form
   56,441.32/77,889.12 = 31,290.82/x
3. Step 3: Cross multiply
   56,441.32x = 77,889.12 × 31,290.82
4. Step 4: Simplify right side
   56,441.32x = 2,437,214,433.88
5. Step 5: Solve for x
   x = 2,437,214,433.88/56,441.32
6. Step 6: Final answer
   x = 43,181.39