Finding the Fourth Proportional to 57,152.42, 78,870.98 and 31,659.18

Step by Step Solution

1. Step 1: Write the proportion equation
   57,152.42 : 78,870.98 = 31,659.18 : x
2. Step 2: Convert to fraction form
   57,152.42/78,870.98 = 31,659.18/x
3. Step 3: Cross multiply
   57,152.42x = 78,870.98 × 31,659.18
4. Step 4: Simplify right side
   57,152.42x = 2,496,990,394.30
5. Step 5: Solve for x
   x = 2,496,990,394.30/57,152.42
6. Step 6: Final answer
   x = 43,690.02