Finding the Fourth Proportional to 809,502,870.64, 1,117,114,322.16 and 438,224,890

Step by Step Solution

1. Step 1: Write the proportion equation
   809,502,870.64 : 1,117,114,322.16 = 438,224,890 : x
2. Step 2: Convert to fraction form
   809,502,870.64/1,117,114,322.16 = 438,224,890/x
3. Step 3: Cross multiply
   809,502,870.64x = 1,117,114,322.16 × 438,224,890
4. Step 4: Simplify right side
   809,502,870.64x = 489,547,300,945,990,592
5. Step 5: Solve for x
   x = 489,547,300,945,990,592/809,502,870.64
6. Step 6: Final answer
   x = 604,750,543.45