Finding the Fourth Proportional to 89,172.86, 133,757.93 and 21,705.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,172.86 : 133,757.93 = 21,705.39 : x
2. Step 2: Convert to fraction form
   89,172.86/133,757.93 = 21,705.39/x
3. Step 3: Cross multiply
   89,172.86x = 133,757.93 × 21,705.39
4. Step 4: Simplify right side
   89,172.86x = 2,903,267,927.72
5. Step 5: Solve for x
   x = 2,903,267,927.72/89,172.86
6. Step 6: Final answer
   x = 32,557.75