Finding the Fourth Proportional to 661,404,292.86, 912,678,598.71 and 382,964,609.10

Step by Step Solution

1. Step 1: Write the proportion equation
   661,404,292.86 : 912,678,598.71 = 382,964,609.10 : x
2. Step 2: Convert to fraction form
   661,404,292.86/912,678,598.71 = 382,964,609.10/x
3. Step 3: Cross multiply
   661,404,292.86x = 912,678,598.71 × 382,964,609.10
4. Step 4: Simplify right side
   661,404,292.86x = 349,523,602,788,910,976
5. Step 5: Solve for x
   x = 349,523,602,788,910,976/661,404,292.86
6. Step 6: Final answer
   x = 528,456,810.10