Finding the Fourth Proportional to 789,705.72, 1,184,567.76 and 221,053.05

Step by Step Solution

1. Step 1: Write the proportion equation
   789,705.72 : 1,184,567.76 = 221,053.05 : x
2. Step 2: Convert to fraction form
   789,705.72/1,184,567.76 = 221,053.05/x
3. Step 3: Cross multiply
   789,705.72x = 1,184,567.76 × 221,053.05
4. Step 4: Simplify right side
   789,705.72x = 261,852,316,279.67
5. Step 5: Solve for x
   x = 261,852,316,279.67/789,705.72
6. Step 6: Final answer
   x = 331,582.14