Finding the Fourth Proportional to 753,164.89, 1,129,756.47 and 220,696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   753,164.89 : 1,129,756.47 = 220,696.72 : x
2. Step 2: Convert to fraction form
   753,164.89/1,129,756.47 = 220,696.72/x
3. Step 3: Cross multiply
   753,164.89x = 1,129,756.47 × 220,696.72
4. Step 4: Simplify right side
   753,164.89x = 249,333,547,327.78
5. Step 5: Solve for x
   x = 249,333,547,327.78/753,164.89
6. Step 6: Final answer
   x = 331,047.76