Finding the Fourth Proportional to 881,166.50, 1,216,069.91 and 499,196.42

Step by Step Solution

1. Step 1: Write the proportion equation
   881,166.50 : 1,216,069.91 = 499,196.42 : x
2. Step 2: Convert to fraction form
   881,166.50/1,216,069.91 = 499,196.42/x
3. Step 3: Cross multiply
   881,166.50x = 1,216,069.91 × 499,196.42
4. Step 4: Simplify right side
   881,166.50x = 607,057,736,965.39
5. Step 5: Solve for x
   x = 607,057,736,965.39/881,166.50
6. Step 6: Final answer
   x = 688,925.12