Finding the Fourth Proportional to 57,146.35, 78,860.22 and 31,651.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,146.35 : 78,860.22 = 31,651.72 : x
2. Step 2: Convert to fraction form
   57,146.35/78,860.22 = 31,651.72/x
3. Step 3: Cross multiply
   57,146.35x = 78,860.22 × 31,651.72
4. Step 4: Simplify right side
   57,146.35x = 2,496,061,602.58
5. Step 5: Solve for x
   x = 2,496,061,602.58/57,146.35
6. Step 6: Final answer
   x = 43,678.41