Finding the Fourth Proportional to 123,056.43, 169,818.66 and 72,099.33

Step by Step Solution

1. Step 1: Write the proportion equation
   123,056.43 : 169,818.66 = 72,099.33 : x
2. Step 2: Convert to fraction form
   123,056.43/169,818.66 = 72,099.33/x
3. Step 3: Cross multiply
   123,056.43x = 169,818.66 × 72,099.33
4. Step 4: Simplify right side
   123,056.43x = 12,243,811,607.50
5. Step 5: Solve for x
   x = 12,243,811,607.50/123,056.43
6. Step 6: Final answer
   x = 99,497.54