Finding the Fourth Proportional to 82,328.42, 123,492.72 and 19,998.92

Step by Step Solution

1. Step 1: Write the proportion equation
   82,328.42 : 123,492.72 = 19,998.92 : x
2. Step 2: Convert to fraction form
   82,328.42/123,492.72 = 19,998.92/x
3. Step 3: Cross multiply
   82,328.42x = 123,492.72 × 19,998.92
4. Step 4: Simplify right side
   82,328.42x = 2,469,721,027.86
5. Step 5: Solve for x
   x = 2,469,721,027.86/82,328.42
6. Step 6: Final answer
   x = 29,998.40