Finding the Fourth Proportional to 82,113.72, 123,045.30 and 42,683.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,113.72 : 123,045.30 = 42,683.64 : x
2. Step 2: Convert to fraction form
   82,113.72/123,045.30 = 42,683.64/x
3. Step 3: Cross multiply
   82,113.72x = 123,045.30 × 42,683.64
4. Step 4: Simplify right side
   82,113.72x = 5,252,021,288.89
5. Step 5: Solve for x
   x = 5,252,021,288.89/82,113.72
6. Step 6: Final answer
   x = 63,960.34