Finding the Fourth Proportional to 71,803.32, 107,609.94 and 55,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,803.32 : 107,609.94 = 55,099.50 : x
2. Step 2: Convert to fraction form
   71,803.32/107,609.94 = 55,099.50/x
3. Step 3: Cross multiply
   71,803.32x = 107,609.94 × 55,099.50
4. Step 4: Simplify right side
   71,803.32x = 5,929,253,889.03
5. Step 5: Solve for x
   x = 5,929,253,889.03/71,803.32
6. Step 6: Final answer
   x = 82,576.32