Finding the Fourth Proportional to 55,385.86, 76,422.24 and 31,511.10

Step by Step Solution

1. Step 1: Write the proportion equation
   55,385.86 : 76,422.24 = 31,511.10 : x
2. Step 2: Convert to fraction form
   55,385.86/76,422.24 = 31,511.10/x
3. Step 3: Cross multiply
   55,385.86x = 76,422.24 × 31,511.10
4. Step 4: Simplify right side
   55,385.86x = 2,408,148,846.86
5. Step 5: Solve for x
   x = 2,408,148,846.86/55,385.86
6. Step 6: Final answer
   x = 43,479.49