Finding the Fourth Proportional to 881,109.72, 1,216,126.98 and 499,347

Step by Step Solution

1. Step 1: Write the proportion equation
   881,109.72 : 1,216,126.98 = 499,347 : x
2. Step 2: Convert to fraction form
   881,109.72/1,216,126.98 = 499,347/x
3. Step 3: Cross multiply
   881,109.72x = 1,216,126.98 × 499,347
4. Step 4: Simplify right side
   881,109.72x = 607,269,359,082.06
5. Step 5: Solve for x
   x = 607,269,359,082.06/881,109.72
6. Step 6: Final answer
   x = 689,209.69