Finding the Fourth Proportional to 82,602.21, 123,942.99 and 45,160.77

Step by Step Solution

1. Step 1: Write the proportion equation
   82,602.21 : 123,942.99 = 45,160.77 : x
2. Step 2: Convert to fraction form
   82,602.21/123,942.99 = 45,160.77/x
3. Step 3: Cross multiply
   82,602.21x = 123,942.99 × 45,160.77
4. Step 4: Simplify right side
   82,602.21x = 5,597,360,864.50
5. Step 5: Solve for x
   x = 5,597,360,864.50/82,602.21
6. Step 6: Final answer
   x = 67,762.85