Finding the Fourth Proportional to 870,017.69, 1,304,612.35 and 357,602.78

Step by Step Solution

1. Step 1: Write the proportion equation
   870,017.69 : 1,304,612.35 = 357,602.78 : x
2. Step 2: Convert to fraction form
   870,017.69/1,304,612.35 = 357,602.78/x
3. Step 3: Cross multiply
   870,017.69x = 1,304,612.35 × 357,602.78
4. Step 4: Simplify right side
   870,017.69x = 466,533,003,182.33
5. Step 5: Solve for x
   x = 466,533,003,182.33/870,017.69
6. Step 6: Final answer
   x = 536,233.93