Finding the Fourth Proportional to 56,665.96, 84,997.98 and 19,729

Step by Step Solution

1. Step 1: Write the proportion equation
   56,665.96 : 84,997.98 = 19,729 : x
2. Step 2: Convert to fraction form
   56,665.96/84,997.98 = 19,729/x
3. Step 3: Cross multiply
   56,665.96x = 84,997.98 × 19,729
4. Step 4: Simplify right side
   56,665.96x = 1,676,925,147.42
5. Step 5: Solve for x
   x = 1,676,925,147.42/56,665.96
6. Step 6: Final answer
   x = 29,593.17