Finding the Fourth Proportional to 55,152.30, 82,704.15 and 21,861.30

Step by Step Solution

1. Step 1: Write the proportion equation
   55,152.30 : 82,704.15 = 21,861.30 : x
2. Step 2: Convert to fraction form
   55,152.30/82,704.15 = 21,861.30/x
3. Step 3: Cross multiply
   55,152.30x = 82,704.15 × 21,861.30
4. Step 4: Simplify right side
   55,152.30x = 1,808,020,234.40
5. Step 5: Solve for x
   x = 1,808,020,234.40/55,152.30
6. Step 6: Final answer
   x = 32,782.32